Delta Pulse revisited

[Errel]

Hi Everybody,
Just want to ask for help about the Delta Pulse. I recently build this machine but unfortunately it did not function, I have already double check the parts placement and its connection but still it failed, this gives me a lot of headaches.There is no clear instructions also in the forum to make this one.I really need this delta pulse to function,any help will be highly appreciated. thanks...

[Tomas]

Re: Delta Pulse revisited

you can look at XR71 schematics,it is almoust similar also check D8 pins 2 and 6 it is not connected in PCB, also VD12 and VD13 (i made mistake there) and follow directions of diodes in schematics, because in silk it is wrong in some places, check voltage - it must be + - half of battery voltage and ground, osciloscope would be usefull in this place, good luck

[Errel]

Re: Delta Pulse revisited/ to Tomas

Hi Tomas,thanks for your advice,maybe I have made some errors in the parts placement. I already put some connections between pin 2 and 6 of the IC8.What value of diodes should i replace vd12 and vd13? And where can i find the schematics of the XR71 for reference?