Рет қаралды 246
here I tried the Eimac 100TH which has been repaired on the High voltage Power Supply by rewinding the high voltage transformer to a higher current to 900Vac-0-900Vac /700ma and on PS HV with a separate filament transformer 0-2.5Vac x2 8A for WE249C HV rectifiers with a 10uf/1600V input capacitor and 10H choke (L1) and a dividing choke (L2/10H+L3/10H) will give more linear results at B+ (1100Vdc). And repair of 6.3 Vdc filament power supply for 809 tube, with Cree C3D10060 diode. 100TH tube with cold anode in class A with 50mA auto bias, 809 tube as driver (10ma- positive bias) and 10Y (10ma) for input.