[Heathkit] DX-60B HV DC Output
Mark K3MSB
mark.k3msb at gmail.com
Fri Jul 23 14:42:27 EDT 2021
Making progress. I have a question on the schematics.
I measure the bias at -130V at the junction of C37/C38. If you go
through R30 (22K) to Pin 5 of the 6146 the bias voltage is supposed to be
-38V as indicated on the schematics. We can ignore the parallel
combination of R11 and R12 as R30 is significantly higher.
Now, If I go through the same R30, then R10 (4700) and R6 (18K) to Pins
2/9 of V2, the schematics say -115 Volts.
You can't go from the same source voltage through 22K to the 6146 and have
-38V, and through 22K and then 18K + 4.7K and have -115 volts.
Is the schematics incorrect?
Mark K3MSB
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