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Originally Posted by oldeurope
... programm the PIC. I am not able to do this.
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If you want to build this design I can send you the programming file. You just need a PIC programmer (mine cost about £50).
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The leak current of this cap can change the bias!
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The cap I used is a ceramic chip (surface mount) not an electrolytic. The leakage is very low.
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... place the electrolytic from the bias pot to ground to block noise from the 5V.
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Good point although I haven't noticed a problem.
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Originally Posted by flyback
... your video should be band limited to ~3.0MHz, is this somthing that you have found is a problem?
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Well, keep this to yourself as it is very hush-hush, but I am developing a standards converter too, and this produces the input video bandwidth times 405/625 which is a bit more than 3MHz...
