03-13-2008, 09:10 AM
Hi Ron,
If I'm reading the schematic right,the 900 ohm resistor in question is placed in parallel with -9vdc section(via the on/off switch) when the radio is in operation-quite a load on that battery!The AC pwr supply I'm building is actually on the radio chassis itself and is intended to eliminate all the batteries.I plan on using a voltage divider off the center tap of the B+ supply to chassis ground to develop the the negative bias voltages for the audio stages.What I need to know is this 900 ohm resistor necessary with this configuration?
73 de Bill
If I'm reading the schematic right,the 900 ohm resistor in question is placed in parallel with -9vdc section(via the on/off switch) when the radio is in operation-quite a load on that battery!The AC pwr supply I'm building is actually on the radio chassis itself and is intended to eliminate all the batteries.I plan on using a voltage divider off the center tap of the B+ supply to chassis ground to develop the the negative bias voltages for the audio stages.What I need to know is this 900 ohm resistor necessary with this configuration?
73 de Bill
