Quote:
Originally Posted by Alex KL-1
Old_TV_nut pointed about the floating heather, and your annotations for other pins are exact.
|
Thanks.
I'm looking at the schematic and trying to determine how best to lower the voltage of G1.
I could either just tie it directly to ground and see how that looks, or I could try to stick a pot in the circuit somewhere to create another voltage divider and lower the voltage somewhat (maybe halfway to start).
I have been trying to figure out how they derived 38.3V from this circuit.
I can see there's a 68K resistor on the far side of the circuit (which I guess forms an RC network with C705), and then there's the 530V source running through a 500k pot and a 330k resistor.
The middle Focus voltage is 208V, which works out correctly at point "219" on the schematic. (530V through the center of a voltage divider 330k,500k works out to ~210V)
So then I have a 210V source that hits a voltage divider at 330k,68k which works out to ~36V, which is basically correct.
So my plan is to replace R721 (68k) with a pot and take it down to like 10V and see how that looks.
Do you think I will run into any issues with the RC network R721,C705?