05-12-2020, 08:44 AM
Somewhere, I saw a chart of philco speakers and it showed the DC value of their field coils. I'll try to find it again to check on the field coil value for the missing speaker.
I think that lowering the value of the filter caps will get the voltage down to where it needs to be. I think I may go all the way down to 6mfd if needed. When I first started working on this, there were plate voltages around 290 volts, so a lot of progress has been made. I only need to wring out a few more volts then decide how to handle the increase that will come from a higher line voltage.
Thanks again for the help. With your suggestions and some thinking about them, I've got a better understanding of the power supply.
I think that lowering the value of the filter caps will get the voltage down to where it needs to be. I think I may go all the way down to 6mfd if needed. When I first started working on this, there were plate voltages around 290 volts, so a lot of progress has been made. I only need to wring out a few more volts then decide how to handle the increase that will come from a higher line voltage.
Thanks again for the help. With your suggestions and some thinking about them, I've got a better understanding of the power supply.
Sometimes I wonder whether the world is being run by smart people who are putting us on or by imbeciles who really mean it.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
