On Sun, Jan 8, 2017 at 2:00 PM, Adrian Graham <[email protected]> wrote:
> You were right, I'd drawn out R335 wrongly and flipped V333. All the anodes > go via R312 to the collector of V333 along with R309-R311. Base for V333 is > the inverted sync output of the MR9735. R322 is 6.8k > (blue-grey-black-brown). All diodes are 1N4148. > > http://www.binarydinosaurs.co.uk/STCExecutelSyncCircuit2.jpg That makes more sense. I am surprised that the anodes of the diodes don't go to a +ve power line (maybe +12V), though. It could be right as drawn, but I would check it. When you power up, what voltage and/or signal (use a 'scope) do you see on the anodes of said diodes? -tony
