[AMRadio] Modulation transformer ID and repair

Donald Chester k4kyv at hotmail.com
Sun Nov 23 12:01:05 EST 2003


Here's how I do mine:


        MOD XFMR         CAP    REACTOR
                                                  _________4-1000 RF CHOKE
304TH P____      ______________|
                    )||(                         )||
                    )||(                         )||
B+_________)||(                         )||
                   )||(                         )||
                   )||(                         )||
304TH P____)||(___||__            _)||
                             ||   |           |
                                  |           B+
                               GND


         This keeps the secondary at B+ potential, but returns the audio 
directly to gnd, not thru the power supply filter cap.

Don K4KYV

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