Model 38 Power supply

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Model 38 Power supply

David
Phorum Expert

Posts: 1,191
Threads: 25
Joined: Jan 2014
City: Wellborn Florida

05-30-2014, 12:45 PM

I have never used the two design I posted placed here for your use. On the farm radio I have, use a D cell for the filments and 90 volts dc for the B+. The design was found on Phil's old radios look under building, what a nice site. To get 135 volts dc connect a full bridge rect to line voltage(120) add a 47UF cap and resistors to get the correct voltage for your current draw. Line voltage divided by .707 gives peak voltage which the Ecap will charge to without a bleeder resistor. I am sure the EEs will be alone to help explain what I am trying to say. David

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Messages In This Thread

Model 38 Power supply - by St Tee - 05-29-2014, 01:36 PM

RE: Model 38 Power supply - by morzh - 05-29-2014, 05:29 PM

RE: Model 38 Power supply - by David - 05-29-2014, 07:17 PM

RE: Model 38 Power supply - by David - 05-29-2014, 07:20 PM

RE: Model 38 Power supply - by Arran - 05-30-2014, 01:23 AM

RE: Model 38 Power supply - by David - 05-30-2014, 12:45 PM

RE: Model 38 Power supply - by Ron Ramirez - 05-30-2014, 01:01 PM

RE: Model 38 Power supply - by St Tee - 05-30-2014, 10:58 PM

RE: Model 38 Power supply - by morzh - 05-30-2014, 11:04 PM

RE: Model 38 Power supply - by Ron Ramirez - 05-30-2014, 11:19 PM

RE: Model 38 Power supply - by St Tee - 05-31-2014, 12:01 AM

RE: Model 38 Power supply - by St Tee - 05-31-2014, 12:10 AM

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