12-03-2013, 08:54 PM
It's been damned cold here the last couple of days, so apart from getting all the usual domestics done I've been working on the Circuit of the PCB - see attached.
A few comments:-
It's not the same as the Manual version!
I don't understand the function of C518.
The Blanking signal is connected to A9 - 21 on the Manual Diagram.
I think I'll have to sort out the external connections before firing it up otherwise I can see the 12AU7 going bananas without a big negative voltage on Pin 7.
Any comments welcome.
Alan
A few comments:-
It's not the same as the Manual version!
I don't understand the function of C518.
The Blanking signal is connected to A9 - 21 on the Manual Diagram.
I think I'll have to sort out the external connections before firing it up otherwise I can see the 12AU7 going bananas without a big negative voltage on Pin 7.
Any comments welcome.
Alan
