Norm converter circuit (pal-B/ntsc to pal-N)

What do you mean with "PAL-B/NTSC"?

PAL-B has 625 lines, 50 fps, fh 15,625 kHz, colour carrier at 4,43361875 MHz, blanking setup 0 IRE, video bandwith 5,0 MHz, audio carrier 5,5 MHz, channel spacing 7 MHz (VHF) and 8 MHz (UHF)

PAL-N is pretty similar, but the blanking setup is at 7,5 IRE, and channel spacing is 6 MHz.

Or do you mean "combination N" with colour carrier at 3,58205625 MHz, blanking setup at 0 IRE, video bandwidth 4,2 MHz, audio carrier 4,5 MHz, channel spacing 6 MHz?


What do you want to convert, video baseband signal, RF signal, or whatever? Please be more specific.


CU

excuseme, i want to convert my DVD video output, as i have an old tv and i conected to the DVD with an RF modulator, but i only see in black and white, i had read than the problem is that the DVD is PAL-B and my old TV is PAL-N...

so i need to convert from the DVD video out (PAL-B/NTSC) to pal-N

There is no "PAL-B/NTSC", either you have PAL-B or you have NTSC. PAL and NTSC is different in colour modulation, colour carrier, sound IF, black level porch, number of lines, fps etc.

A PAL-N TV should display a PAL-B signal in colour, because the colour carrier is at the same frequency. So your output of the DVD player is either not PAL-B, or your TV is not PAL-N, or there is something wrong with the RF modulator, or you don't feed a CVBS signal into the RF modulator (or only the Y signal or whatever).

Anyway, there are converters around, one of the more common ones is the Panasonic NV-W1 (in North America also called AG-W1). When released in the early 1990s the price was about 2500 Euro. That converter can convert between a lot of different standards.


CU

What i need as someone toldme exactly is:
from NTSC to PAL-N (in base band?)
and my output is CVA (Video compuesto).

Hello!

Ok, this includes conversion from 60 fps to 50 fps which includes a really large block of electronic.

Never heard of CVA, you may mean "CVBS", which stands for "colour video baseband signal".

The Panasonic NV-W1 or AG-W1 will do that for you, these devices appear from time to time on the surplus market for a few up to several hundreds of USD.

The other way is to buy a DVD player which is capable of rendering a NTSC DVD to PAL video including frame frequency conversion if your only goal is to display a NTSC DVD; or you may buy a multi norm TV set which is capable of displaying NTSC.


CU