Homemade adapter with VGA on tulip. Convert video in VGA or monitor as a TV. What is the VGA RCA adapter

- Adapter that allows you to connect the video output of a computer with a conventional color TV. Below we consider several options for such an adapter, we will describe the pros and cons of each design and give advice on the manufacture of the VGA SCART adapter with your own hands.

Before you start, one important clarification: all the advice and instructions in this manual are represented by "as it", and everyone uses them at their own risk.

Assigning VGA-SCART conclusions

To understand the functioning of the VGA SCART adapters below, consider different types Signals that need to be transferred from the computer to the TV.

RGB signal

The main signal that is transmitted via the cable from the computer to the TV, this is the RGB signal with three components (R-red, G-green, B-blue) Fortunately, in this case, the standard and SCART connector are fully compatible (outputs: amplitude 0 , 7B, resistance of the 75th Ohm). Therefore, you can directly connect the appropriate contacts without resorting to the use of special schemes or devices (later consider this option).

Common wire

In VGA and SCART connectors, several conclusions have a connection with a shared wire (mass) that are often connected to each other inside the cable. Their overall connection allows you to reduce various interference (especially in terms of three RGB lines). The same applies to the shielded cable.

Note: Essentially, the total wire is only one, so it is normal that all contacts having a mass designation are connected together.

720p / 60Hz, 1080p / 60hz ...

Audio and video converter

Audio signal

In order to output the sound to the TV, you must take a cable with a standard 3.5 mm PC connector and connect it to the SCART connector directly. You can withdraw both mono and stereo sound without resorting to the use of special devices and schemes. Just be careful not to confuse audio output with audio entrance, as SCART is located nearby.

Switching signals

As mentioned earlier, the SCART input can take different types of signals. In order for TV to understand which type of signal is filed to the input, there is a special contact "RGB Blanking" (output 16). If on this contact Submit voltage 0 ... 0.4V, then the TV will expect a "composite signal", if 1 ... 3B, then the "RGB" signal. The use of this type of signal is extremely important for the functioning of the VGA-SCART adapter, and as we will see further exist. various methods Get it.

Another output that can interest us is "SWTCH" (output 8). This output is designed to switch TV / AV mode. Also on some TVs, this conclusion allows you to establish the "aspect ratio of the image aspects:

• TV mode mode - from 0 to 2 V.
• AV mode with a ratio of 16: 9 - from 5 to 8V.
• AV mode with a ratio of 4: 3 - from 9.5 to 12V.

If you do not file a signal on this outputThe TV will remain in the default state (TV mode), and then to go to AV mode, we will need to use the remote control.

Synchronization signals

It starts the most difficult thing in the issue of building a VGA-SCART adapter. Synchronization of signals The computer video card is very different from the synchronization system, which is used in the usual TV, so it is necessary to resort to some tricks to make them compatible. The difference between the majority of VGA-SCART circuits of adapters is based on how to solve this problem.

In the computer, the standard VGA assumes the use of two different signals for synchronization, one vertical (60 Hz) and one horizontal (31 kHz). Both signals operate in accordance with the TTL logic and, therefore, have a peak value equal to 5V. Finally, signals can be either positive or negative depending on the video operation mode used.

At the same time, there is only one composite synchronization signal with a peak value of about 1 ... 3B. Also, the frequency of the horizontal sweep is significantly lower, about 15 kHz (vertical, and almost coincides with 50 ... 60 Hz). Finally, the signal must always be negative.

The main problem with which we face - horizontal synchronization. Collect the scheme for this conversion is quite complex occupation. In this case, as a rule, changes are made to the signal source itself (video card) using special software Or even a modified VGA (like the famous ArcadeVGA) to get 15 kHz directly at the VGA output. We consider this question further.

Obtaining a sync signal 15kHz software

As already mentioned in the previous section, the solution of the main task when building an adapter VGA SCART, this is obtaining a signal of horizontal synchronization by 15 kHz. As a rule, the decision is achieved by the change, mainly in the field of software, video card settings personal computer. In addition, synchronization signals must be negative, i.e. With a constant level of up to + 5V, which rushes to zero during the momenta itself.

SOFT-15KHz program

This interesting software under Winows XP / Vista, created by the German programmer, allows simple way Get the synchronization signal in 15 kHz negative type. It is compatible with most video cards, and very easy to use.

Its only disadvantage is that during the launch operating system the signal from the video card remains at 31khz, so you can't see anything to the end windows downloads. Use the Soft15KHz program is quite simple: after downloading, simply unpack the RAR archive with the program and run it (installation is not required), then click on the "Install 15 kHz" and restart the computer.

(1.4 MIB, downloaded: 2 464)

This is a powerful software for editing all video card parameters, including the preparation of a synchronized signal in 15 kHz. The program is not free, although it can be successfully used in the conditionally free version (the only drawback in this case is the presence of a screensaver that lasts about six seconds at startup). You can download the PowerStrip program from the official site.

Obtaining a sync signal 15 kHz hardware

Let us now turn to the study various schemes Adapters VGA SCART, ranging from the simplest to the most difficult. Let's start, perhaps, from pinout outputs VGA and SCART connectors:

Basic scheme with composite synchronization (for ATI Radeon video cards only)

• pros: Easy to implement, does not require any special components.
• Minuses: An external power supply is required 5 V and 12V, only works with certain ATI Radeon. Video cards.

Mainly use three RGB lines (VGA contacts 1, 2, 3) connected to the corresponding SCART contacts (contacts 15, 11, 7). It is also necessary to connect both the general wires of each channel (of course one common wire is enough, but it is better to use them all for high-quality shielding). For this, conclusions with VGA (6,7,8) must be connected from 13, 9, 5 SCART.

Note: These bonds are always the same in all charts of adapters. The dotted brown wire that connects the contacts 10 VGA and 17 SCART shared synchronization signal wire. The black wire connects the retained cable shells of both connectors. And finally, the brown wire, which comes from 13 VGA contact to 20 SCART transfers the composite synchronizing signal.

Attention: In order for this VGA SCART adapter circuit, it is very important that the video card supports the synchronizing signal mode at the output 13, which is usually absent from most video cards and only some video cards belonging to the ATI Radeon family can support this mode of operation.

Obtaining a synchronization signal with diodes and resistors

• pros: Works with any video cards, the availability of a function on an external signal.
• Minuses: Required outdoor nutrition 12V.

Consider the first adapter scheme. In this case, the connection of the lines R, G, B and the masses are the same as the previous scheme. The diagram allows you to use a conventional video card (not generating a composite video signal). Synchronization signals from contacts 13 and 14 VGA are mixed in the circuit of diodes and a resistor of 330 ohms, and then transmitted to the usual 20-pin SCART.

Using bipolar transistor To mix two sync signals provides good quality Images.

Instead of using an external power source, 5V voltage is taken from the output of 9 VGA. True, not all video cards are able to provide this tension, especially the older generation cards. In any case, all latest modelsCompatible with VESA 2.0 must come up. In this scheme, it is not 12V (to enable AV mode), but 5V. With the support of the TV mode, the ratio of the parties at 5V will activate the ratio 16: 9 instead of 4: 3.

74HC86 microcircuit adapter

• Pros: Excellent quality and compatibility (works with any video cards)
• Minuses: Of course, one of the most complex schemes.

VGA SCART adapter circuit built on integral microcircuit 74hc86 (four logical elements "excluding or"). It also requires an external power source 5B. The signals are mixed using elements excluding or, at the output of which a composite signal of excellent quality is obtained. The adapter works with any TV, provides a negative signal at a frequency of 15 kHz.

You will need

• Internet, very old video card with support for TV-OUT OVER D-Sub, D-Sub M connector, RCA connector, coaxial cable 75 ohms, soldering supplies

Instruction

On the Internet you will find a ready-made VGA tulip connector, but unfortunately, even if you buy it, it will not work. To transfer the composite signal from the computer, it is necessary to support this species Signal standard. Until 2000 released a video card with support for TV-OUT OVER D-Sub. That is, really to such a video card you could TV adapter VGA tulip. However, after 2000, the signal transmission standard was changed, and the video cards ceased to transmit the composite signal. So if you make a VGA tulip adapter or buy ready and try to use it on a modern video card, the adapter will not work under any circumstances.

If you still need to display a signal from the VGA of the output of a modern video card through a composite entrance to the TV (yellow tulip video), then the only way to do this is to purchase a special converter device. It transcoding the signal between different standards. The cost of this converter varies from 10 to $ 20. This is a rather complicated device, so it is only a professional to assemble it on your own.

If you are a happy owner of an ancient video card (Issue until 2000), which supports TV-out Over D-Sub, for example, Matrox, you can try to make an adapter VGA tulip yourself. To do this, you need a RCA and D-SUB or "pinout" connectors.

Prepare VGA connectors and tulip for soldering. Open the protective housing, apply flux to the desired contact pads according to the pinout. Take the segment of the cable of the desired length, read the ends, promote them.

Be sure to wear the housing of the connectors to the cable before you solder it to the connectors. Sold down the inner cable vein to the central contact site of the tulip connector and to the contact number 3 of the VGA connector. Sold down the shielding conductor of the cable (braid) to another tulip connector pin and to the contact number 8 of the VGA connector on the other side of the cable.

Collect the connectors at both ends of the cable. Adapter is ready. You can try to connect the TV to the computer.

Video on the topic

note

Pay special attention to setting the signal format, resolution and redressing. Start with the lowest values. The TV may not recognize the video signal at most combinations of these parameters, so try different options.

Helpful advice

The easiest way to connect the TV to the computer is a video card with the presence of a separate TV-out, tulip or S-Video.

Also you can use the converter.

You may be suitable for another way to connect a computer to a TV, for example:
- Connecting the VGA VGA cable, if there is a VGA input on the TV. Some modern TV models are equipped with a special adapter for connecting VGA;
- Connection through the VGA S-Video adapter. Such connection is possible on some models aTI video cards Radeon, for example, series 3000 and special setting Video card driver. Also on the TV should be the input S-Video;
- Connection via VGA YPBPR adapter. The same as in the previous paragraph, but on the TV there should be a component input YPBPR (three tulips not yellow);
- Connect via VGA SCART adapter. The same as in the previous paragraph, but on the TV there should be an input SCART (comb).

Sources:

• adapter with VGA on tulip buy

The HDMI name (High Definition Multimedia Interface) is literally translated as high definition multimedia interface. Standard HDMI Cable consists of 19 wires. Knowing the cable pinout scheme, you can connect a HDMI outlet to it or repair the wire break, replace the damaged connector. Numbering Separate socket contacts are made to right, and contacts with odd numbers are in the upper row, and in the lower - with even.

HDMI is used as an interface for transmitting uncompressed digital video and high quality audio signals. HDMI interface supports transfer to maximum resolution Video and audio signals of such formats as DTS, LPCM, DVD-Audio, Dolby Digital, Super Audio CD, etc. HDMI may have a maximum data transfer rate up to 10.2 Gbps (340 MHz). The interface uses the TMDS protocol.

HDMI connectors (mini, micro) and their bondage

• Type "A" - 19 contacts, Specification 1.0
• Type "B" - 29 contacts, Specification 1.0
• Type "C" - 19 contacts (MINI), Specification 1.3
• Type "D" - 19 contacts (Micro), Specification 1.4
• Type "E" - 19 contacts, Specification 1.4

Pickup HDMI TYPE A (19pin)

Pickup HDMI Type B (29pin)

Pickup HDMI Type C MINI (19pin)

Pickup HDMI Type D Micro (19pin)

Collecting Cable HDMI

HDMI cable is divided into 5 groups of 3 veins. And 4 more veins go separately. The connector provides switching of four groups of shielded symmetric circuits to transmit digital video signals (screen from aluminum foil), individual service data and nutrition wires.

United color marking There is no live and every cable manufacturer may have its own marking. In the test instance, the HDMI cable was used precisely such.

Pinout HDMI cable on sound

The sound in modern TVs or consoles is sometimes only through HDMI (without ordinary audio outputs or both on headphones, that is, there is no old audio output). Therefore, you have to think how to "extract" sound signal From Echdimiai nest. To do this, you can buy a special audio adapter on Ali (600 rubles) in the form of a small box, which removes the sound from the HDMI signal and displays it in analog form into two RCA tulip connections or digital to optical SPDIF.

HDMI DVI pinout contacts

RCA Tulip RCA Speaker

Usually the HDMI - RCA adapter use when you need to play or transfer data to video and audio format. A special chip is embedded in this connecting cable that performs the role of the HDMI digital signal converter into a composite video or audio. Then this signal comes through the tulip connector on the TV screen.

To convert a pure digital HDMI signal to an analog (S-Video, component or composite), it is not only necessary an adapter, but an integer device consisting of a digital signal receiver, several DACs, shaper television signalWell, and also a bunch of details on the little things. It is too difficult in order to call it just an adapter.

The adapter design is made in the form of a miniature hardware module With wire. At one end, which there is a HDMI connector, and on the other three multicolored tulip connector.

HDMI-VGA adapter pinout

The HDMI-VGA adapter consists not only of some wires and connections. The HDMI-VGA cable is a whole scheme on the chip, it is very difficult to solder that it is very difficult - just buy a ready-made adapter (as in the case of the release of sound from such a cable). Its price for Ali about 700 rubles.

HDMI-HDMimini adapter

Making a HDMI cable with your own hands

The manufacture of HDMI cable at home is not a problem - just take a piece of wire of the desired length and the necessary connectors. Clean a pair of centimeters from the pitch, remove the isolation from the wiring and gently take them.

Depending on which connectors need to be used at the ends of the cable, choose the circuit of the basement and solder. For example, if you need from both sides to have HDMI plugs - the scheme will be like this:

Here is the option for both standard size and mini or micro HDMI.

Master's answer:

To date, many are interested in the question of the independent creation of an adapter VGA tulip. The idea of \u200b\u200bconnecting to a TV computer fell by many possessors of such equipment. Other, it is precisely for such interest a large number of speculation.

To connect to a TV computer, you will need the Internet, an old video card model with TV-OUT OUTER D-Sub, coaxial cable 75 Ohm, RCA connector, D-Sub M connector and a set of soldering supplies.

Of course, on the Internet you can find a ready-made VGA tulip connector, but it will not work at all. In order for a composite signal to the TV to the TV, the video card must support the specified view of the signal standard. Those video cards that manufacturers produced up to 2000 were characterized by support for TV-OUT OVER D-Sub. If there is such a video card, you could connect the TV using the VGA tulip adapter. However, after 2000, changes occurred in the standards of signal transmission, and the video card ceased to transmit the composite signal. In other words, if you independently make a VGA tulip adapter or buy ready-made, when it is used on a modern video card, it will absolutely not work.

If you wish to make an output from the VGA of the output of the modern video card model by means of a composite login to the TV (it is usually indicated by yellow), you must take care of purchasing a special converter device. Thanks to this device, transcoding the signal between different standards. This converter is within $ 10-20 USD. Such a device is characterized by a complex configuration, so independent assembly Forces, perhaps a professional.

In case you have an old video card model (release until 2000), which is able to provide support for TV-OUT OVER D-Sub (such Matrox released), you can try to make an adapter yourself. This will have to use the diagram of connecting the D-Sub and RCA connectors or "pinout".

Tulip and VGA connectors must be prepared for soldering. For this, a protective body is removed, flux is applied to the desired contact pads, and the pointing instructions are followed. After that, the segment of the cable of the required length must be cleared the ends and lead them.

Before saving the cable to the connectors, you should wear the housing of the connectors. To the central contact site of the tulip connector, you must solder the inner cable vein, and the second end to contact number 3 of the VGA connector. Then the braid, or shielding cable conductor, solder to another contact of the tulip connector, and on the other hand - to contact No. 8 of the VGA connector.

Then make an assembly of connectors at both ends of the cable, after which your adapter is quite suitable for operation. Now through TV connection testing to a home computer.

note

Special attention should be paid to setting the resolution, signal format and redressing. Start always from the lowest values. Since in most combinations of parameters, the TV may not define the video signal, you should try different options.

Useful advice

The easiest way to connect the TV to the computer is a video card with the presence of a separate TV-out, tulip or S-Video.

Also you can use the converter.

You may be suitable for another way to connect a computer to a TV, for example:
- Connecting the VGA VGA cable, if there is a VGA input on the TV. Some modern TV models are equipped with a special adapter for connecting VGA;
- Connection through the VGA S-Video adapter. Such a connection is possible on some ATI Radeon video card models, such as the 3000 series and a special configuration of the video card driver. Also on the TV should be the input S-Video;
- Connection via VGA YPBPR adapter. The same as in the previous paragraph, but on the TV there should be a component input YPBPR (three tulips not yellow);
- Connect via VGA SCART adapter. The same as in the previous paragraph, but on the TV there should be an input SCART (comb).

Sources:

• adapter with VGA on tulip buy

Cable- adapter VGA.-RCA is used to connect audio and video devices. For example, using it, you can connect a DVD player, a satellite tuner, which has an analog component video output, to a multimedia projector with a component video input. Quite often, household apparatus users stand in front of the choice: buy an adapter VGA-RCA (or extension cord) or make it yourself. This is due to the fact that the cost of long original cables from leading manufacturers is quite high. And cash, and the labor costs for the personnel manufacture of such a device are very small. In this article, we will look at what is a VGA-RCA adapter, as well as its pinout. Thanks to this information, you can make the mentioned cable independently.

Description and pickling

For the manufacture of the subject of our conversation, it is recommended to use (as a conductor) Computer cable type " twisted para»SAT5 (it is better to use shielded), since it is able to transmit a video signal without loss of quality at a distance of up to 50 meters. The VGA-RCA adapter contains three RCA-Tulip-type connections ("Dad" or "Mom", depending on the destination) and the D-Sub connector (15-pin).

Pointing the D-Sub connector for this adapter:

• the first is alarm red;
• the second is alarm green;
• third - signal blue;
• sixth - Red Earth;
• seventh - green earth;
• the eighth - the earth is blue;
• 4, 5, 9, 10, 11, 12, 13, 14, 15 pins are not used.

Thus, for the adapter VGA-3 RCA requires only six pins. If you are using a "twisted pair" type cable, then take color pairs of wires to break each "tulip". For greater rigidity, the ends that the RCA connectors are soldered, it is recommended to clipped with a heat shrinking cambrick. Here, in fact, all the description. The obtained RCA-VGA adapter exercises the component video signal to the VGA input.

Application

Very often, the VGA-RCA adapter is trying to use to supply a component video signal to a computer monitor. However, this cannot be done, the adapter will not work. This is due to the fact that the computer monitor accepts non-colorary component signals issued by a DVD player, and the RGB component. To ensure the performance of such an connection, the use of a special transcodera is required.

Conclusion

The described method of manufacturing an adapter can also be used for other similar products: 3 x RCA - 3 x RCA, VGA on VGA extenders, etc. For example, you can make an adapter and for a S-Video cable or "SKART", most importantly - use the right pinout These connectors. The use of twisted pair makes such adapters and extension cords are very cheap in production. If you need a short adapter, you can use a unshielded cable, it will further reduce your costs. And if the extension is required from 10 meters and more, it is better to take vitua couple with a copper screen. This will provide high quality Transmitted component video signal. It is better not to save on this element, because it will not like to watch the movie, while "snow" or stripes that distort the picture will appear on the screen. It is better to do it once well than redoing and eliminating flaws.

Those who are owners of a significant number of audio and video equipment are facing the choice: to make or purchase an adapter in the store, which will convert signals of different types. What is really to say, but the factory devices are quite a lot, but often you can do without them. And within the framework of the article will be told about how to make an adapter VGA RCA. There will also be answers to frequently asked questions.

What is the VGA RCA adapter

Scheme this device It may seem difficult, but exclusively until the moment you do not figure it out. What is this device? This is an adapter from tulips (RCA connectors) analog video output in VGA D-Sub on 15 PIN. The device considered here can be used to connect the DVD player or satellite tuner to the multimedia projector. Of course, provided that there is no possibility of work directly by means of the same type of cable, which is usually distributed in cheap or obsolete devices.

What is the idea?

How to implement such an idea? You need a computer cable (type - twisted Cat5 / Cat5e classification pair) designed to pass the video signal. To use it, we will be due to the fact that the transmission is carried out at a distance of fifty meters without loss of quality.

To begin with, we need to get three RCA connectors and one D-sub15 PIN (this is a plug), as well as twisted pair. The last part is better to take the shielded STP than UTP. But it is more difficult to get it, which affects the price. Therefore, the issue of opportunities and desires is considered. There is no particular difference between the elements, but there is one nuance: UTP is better to use if the cable length is less than 10 meters. If the distance is more, then it will be better to find STP.

Plotovka

How to pinch for the D-Sub connector on 15 PIN-it? Rooms go from left to right:

1 - R-y (PR).
2 - y.
3 - b - y (Pb).
4 - Ground - Brown.
5 - Ground - WhTbrown.
6 - Ground R-Y (PR) - WhTred.
7 - Ground Y - WhTgreen.
8 - Ground B-Y (PB) - WhTblue.
9 - no need.
10 - Ground.
11 - not needed.
12 - DDC Dat.
13 - HORIZONTAL SYNCHRONIZATION.
14 - VERTICAL SYNCHRONIZATION.
15 - DDC Clock.

On VGA RCA cable, we need six pins from the fifteen. How to properly disintegrate connectors and contacts? Check out this picture, and you will be clear how and what to do.

So let's see what happened. If everything was correctly soldered, then you now have an adapter that can serve a video signal to VGA D-sub for 15 projector PINs. As the end product should look like, you can look at the photos presented in the article.

Check

Wires of couples, at the ends of which RCA plugs are useful, will use the heat shrinkage to get greater rigidity. In general, it is now possible to connect the result of labor and enjoy them (if everything was fast as needed). Paired wires, on the ends of which RCA plugs are attached, you can enhance the heat shrinking to get greater rigidity.

In this case, a satellite tuner was used with a 3 RCA component video output as a signal source and a Sanyo multimedia projector, where there was no separate video input. If on this moment There is no opportunity to make sure that the adapter has received the adapter, then you can only carefully examine the entire design and make sure that there were no omissions, and everything is snapshots as indicated in the article.

What you need to understand

The report should be made that the addressed adapter can provide operation and the full functioning of the device that has a VGA video input, only if it can contain auto-detect the type of video signal. This will be the ability to select the mode in which data on RGB / YPBPR will be transmitted. To use a positive will be sent to send specified types of signals. Why is that?

The fact is that RGB and HV.Synhr (as, an example, the data running from the output of a personal computer video card) is converted to RGB, which has sync pulses in the green channel (Y). He, in turn, turns into a color-toe YPBPR. And as a result, you can conclude that these signals are not the same, although they can transmit the same information. Therefore, carefully examine how the VGA RCA adapter looks like.

Frequently asked Questions

Based on the data presented in the article, it can be assumed that readers have some questions. However, such a topic is not addressed for the first time, so such information can be found without difficulty. We found out how to make a VGA RCA adapter with your own hands. Now consider possible its improvements.

What adapters can be done using twisted pair?

• VGA Extension cables - special cables that have D-sub 15 PIN connectors at their both ends, while entering and accessing them on the same technology.
• RCA (3xRCA) is used to transmit component video signals. At each end there are three connector. Applied when working with a DVD player and a TV.
• RCA (D-sub15pin) was considered slightly higher. Here are component Y, PR, PB in VGA.
• To transmit an analog sound, two pairs of stereo signals can simultaneously be used (at each end of 4 RCA connector).

What is needed free couple Brown-Brown / WHT?

It can be used to transmit a monoadline from a DVD player when there is a multimedia projector audio input (provided that it has speakers). In the opposite case this couple It will be better to cut and insulate. Therefore, it is necessary to think good aspects and how VGA RCA adapter will be used.

How can I make an adapter SCART VGA?

If the source of the video signal has a full SCART video output, then similar device can be done without problems. To do this, pinout contacts in the following way (First outputs):

• 7 - blue;
• 11 - green;
• 15 - red.

Now the Earth:

• 5 - blue;
• 9 - green;
• 13 - red.

For the rest, everything is done as it was previously described in the article.

Conclusion

What can I say? Carefully examine the presented drawings and on the details mentally imagine what you will do. During work, observe marginal care and attentiveness - after all, if you miss the ground, the consequences will be quite sad and very negative. As a result, it will turn out not VGA RCA for technology, but the need to buy a new device to play video. But if everything works out - then the connection of the computer, the projector, the TV and many other devices will not be a problem now. The main thing is that you need to make sure that all conclusions are connected to the desired outputs, and no incidents will happen.