RL-Ultimate-7V-BC-AC-AVC-model-1933-34 电路原理图.pdf

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1、58 I.F. 90v 250K +250v 500K 150pf 100K 500pf 56 Det 0.25 250K Volume ConnNoConn 100pf 400r 100k 1st A.F. -20v to chassis 8uf TTTT 59 PWR SPKR is 4 ohm Field coil is 2500 ohms Log 2.5v Heater Filament 80 Rect 240v AC C.T. 8uf FF SPKR Plug 10K 10K 400r 10K 56 500K 0.02 C.T. Tone 10K 1000pf 6k P T 0.1

2、OSC ConvR.F. 5857 +250v 0.04 90v T 400r0.25 3 to 4 volts T ANT 0.1 8 inch 5 to 7v The 57, 58, and power pentodes have cathode and pin 4 connected NB. After Chassis #4949,The heater Cct will be earthed on one side instead of C/Tapped ULTIMATE Seven. A.V.C Model 1933/34 Re-drawn from original blueprints, Nov 2015. K.L.S 5v 0.25