RCA-Victor-Co-Inc-7-3 电路原理图.pdf

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1、RADIOLA 20 VICTOR 7-1, 7-3 & 7-30 (ALHAMBRA 1) Radiola 20 isa tuned radio -frequency receiver with regeneration, employing four Radiotrons UX-199 and one Radiotron UX-120. It consists of two stages of balanced tuned radio -frequency, a regenerative detector and two stages of audio frequency ampli- f

2、ication. To have the amount of regeneration under full control at all wave -lengths the inter - element tube capacities have been compensated for by the small neutralizing condensers located on the back of the Radiotron shelf. 241). RE2ND.A.E Rio FREQUENCY CURRENT - AVM FREQUENCY CURRENT 6 -2 45V +C

3、C .Schematic circuit of RC A Radiola 20 15T AE Radiotron sequence in RCA Radiola 20 RCA VICTOR DIVISION OF RADIO CORPORATION OF AMERICA, CAMDEN N. J., U. S. A. 收音机爱 好者资料库 RadioFans.CN PAGE 76-A RADIOLA 20 VICTOR 7-1, 7-3 & 7-30 al 3rAmt JEC04 L 1 3. 5 99 + IOW*-7r CB4rri-ffly I.L. vr,vr Tito,rook.on

4、 810 11 a. j it /1. Ovrovr Jock 41 -1411111411111111110001011111401111110111111114 BorrertrGROUP eE _ HH */HH 147BAT TERI GROUP Le v(Ever NoCOLOR 2Raz 3 YELLOW 4 S Borown, Wr,er Propro 7 BLqck R., Goo., M.e.n Mooche.R.15 12.0 Gw.W/TNK L LOY IA. RED TRACER /0W r., DROWN MACE,. WIRING DIAGRAM MODELS 7-I, 7-3 AND 7-30 BATTERYr-r+.-NNKCTIONS CableroSet -22J C(black with green tracer) +45 B(maroon) +135 B(red) +90 B (maroon and red) +A(yellow) -A,-B, +C (green with yellow and red tracer: C(black and green) 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN