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Model 38 Power supply
#6

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


Messages In This Thread
Model 38 Power supply - by St Tee - 05-29-2014, 12:36 PM
RE: Model 38 Power supply - by morzh - 05-29-2014, 04:29 PM
RE: Model 38 Power supply - by David - 05-29-2014, 06:17 PM
RE: Model 38 Power supply - by David - 05-29-2014, 06:20 PM
RE: Model 38 Power supply - by Arran - 05-30-2014, 12:23 AM
RE: Model 38 Power supply - by David - 05-30-2014, 11:45 AM
RE: Model 38 Power supply - by Ron Ramirez - 05-30-2014, 12:01 PM
RE: Model 38 Power supply - by St Tee - 05-30-2014, 09:58 PM
RE: Model 38 Power supply - by morzh - 05-30-2014, 10:04 PM
RE: Model 38 Power supply - by Ron Ramirez - 05-30-2014, 10:19 PM
RE: Model 38 Power supply - by St Tee - 05-30-2014, 11:01 PM
RE: Model 38 Power supply - by St Tee - 05-30-2014, 11:10 PM



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