Stromberg-Carlson-Co-635 电路原理图.pdf

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1、MANUAL OF MOST-OFTEN-NEEDED RADIO DIAGRAMS SCHEMATIC DIAGRAM STROMBERG-CARLSON NOS. 635 AND 636 RECEIVERS The following table shows how the filament, plate and grid voltages vary with different line voltages, in the No. 635 receiver. The plate voltages are measured between tube plates and Tap No. 2

2、of the voltage divider. The grid voltages of the heater type tubes are measured across the cathode resistors; and that of the audio output tube is measured between Taps No. 1 and No. 2 of the voltage divider. Line Voltage 105 110 115 115 120 125 “HI-LO” Switch “LO” “LO” “LO” “HI” “Hi” “HI” UX-280 Fi

3、lament Voltage (RMS) 4.5 4.75 5.0 4.5 4.7 4.93 Voltage per anode (RMS) 236.0 248.0 259.0 236.0 248.0 258.0 Amplifiers Heater Voltage (RMS) 2.17 2.27 2.38 2.16 2.26 2.35 Plate Voltage 106.0 110.0 115.0 106.0 110.0 115.0 Grid Voltage 5.0 5.5 5.75 4.7 5.2 5.6 Detector Heater Voltage (RMS) 2.11 2.22 2.3

4、2 2.1 2.2 2.3 Plate Voltage 39.0 40.0 42.0 38.0 40.0 41.0 Grid Voltage 3.25 3.5 3.75 3.25 3.5 3.75 Audio Output Tube Filament Voltage (RMS) 4.5 4.75 5.0 4.53 4.72 4.94 Plate Voltage 167.0 175.0 184.0 165.0 174.0 182.0 Grid Voltage 37.0 40.0 41.0 36.0 40.0 41.0 NTEThe grid voltage on the 1st audio tube will be slightly lower than that on the R. F. amplifier tubes, due to the drop m tne secondary of the 1st audio transformer. F 200 OMPILED BY M. N. BEITMAN, SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN