Hi there guys...
Ive searched google high and low but to no avail. ..

My laptop has tv out through the vga port capability..but I have no cable..I know I can buy a cable but would rather make one...

Q. What pins on the 15pin vga connector need to be joined?

Im guessing the 3 rgb outputs go to the centre pin on the rca..and the earths go to the outer of the rca..

Cheers

 

Did you try "VGA to composite" on Google?

 

Yes looked at hundreds of pages..and theyre all the same...half saying it cant be done or buy one or u need a convertor etc etc...diagrams for component (not composite) or b/w etc...

Its so basic but theres no clear info out there...

 

The information you require should be in the user guide or on the manufacturer of your laptops website, you maybe lucky!

 

How about this?:

http://www.analog.com/static/imported-files/data_sheets/AD724.pdf

 

Nope checked there...gives pinouts of the vga port but I need to know which pins to join where...

 

How about this?:

Yeah ... I only need a passive not active connection. ..

Its just a simple lead...

 

You cannot get colour composite with just a passive circuit.

 

Hello,

You can not just join some pins.
You will need a circuit like the one MrChips gave you.

Bertus

 

http://www.geocities.ws/podernixie/htpc/cables-en.html

has some information you may find useful, no idea if any of it will work!

 

Hello,

You can not just join some pins.
You will need a circuit like the one MrChips gave you.

Bertus

Usually yes but the chipset I have does the conversion...

 

http://www.geocities.ws/podernixie/htpc/cables-en.html

has some information you may find useful, no idea if any of it will work!

Yes that page is one of the best..but it only shows vga to rca in black and white...

 

You can electronically combine the RGB signals along with the HSYNC and VSYNC to give you B/W composite.

You cannot do the same to produce colour because you need to produce luminance and chrominance and you have to add colour burst signal.

 

Hi there guys...
Ive searched google high and low but to no avail. ..

My laptop has tv out through the vga port capability..but I have no cable..I know I can buy a cable but would rather make one...

Q. What pins on the 15pin vga connector need to be joined?

Im guessing the 3 rgb outputs go to the centre pin on the rca..and the earths go to the outer of the rca..

Cheers

Ref: https://en.wikipedia.org/wiki/VGA_connector

Your PC Cannot have TV Out on the VGA 'D' Port. The 15 pin connector will connect to only a display that has a 'D' connector.

The signal levels on the EGA connector are Digital (0/5 Volts) whereas your TV input will be 1.0 V p-p (+.7 Video, -.3 Blanking)

TV out can be on a RCA (composite video) or 'S' video output; and in some cases SCART.

You will need to process the VGA output as MrChips has stated to derive a 'S' video out.

Ref: http://www.wikihow.com/Use-Your-TV-As-a-Computer-Monitor

Ramesh

 

It depends on which pin your laptops chipset uses when set to TV out, this is why I originally suggested your manufacturer. You may have to buy the correct cable for your machine if you can not find the information. Most laptops I've seen have an RCA socket on them for TV OUT, if it's supported.

The driver may support TV out, but the hardware may not. It is not unknown for there to be one driver that supports several versions of one chipset. If your chipset does not have TV OUT, then the circuit by MrChips is the only way I can see of doing it.

 

It depends on which pin your laptops chipset uses when set to TV out, this is why I originally suggested your manufacturer. You may have to buy the correct cable for your machine if you can not find the information. Most laptops I've seen have an RCA socket on them for TV OUT, if it's supported.

The driver may support TV out, but the hardware may not. It is not unknown for there to be one driver that supports several versions of one chipset. If your chipset does not have TV OUT, then the circuit by MrChips is the only way I can see of doing it.

Yes thats how I thought it was done...buy using some of the unused pins..but then I changed to the idea it is combined. .

Heres the pinout..not sure if its different or not

 

The Dell Vostro 1200 does not mention anywhere in the specs that it is TVOUT capable, the only way would be the one suggested by MrChips.

Sorry

 

The Dell Vostro 1200 does not mention anywhere in the specs that it is TVOUT capable, the only way would be the one suggested by MrChips.

Sorry

Lets say if it did..how would it be connected?...

 

Knowing Dell there would either be an SVHS connector or RCA on the machine somewhere

 

Knowing Dell there would either be an SVHS connector or RCA on the machine somewhere

Or a long lost rat-tailed adapter somewhere.