Noblitt-Sparks-Industries-Inc-950T 电路原理图.pdf

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1、VOLUME R-16, MOST-OFTEN-NEEDED 1956 RADIO SERVICING INFORMATION Amn INDUSTRIES, INC. Models 950T, 95 IT Chassis RE-391 ALIGNMENT PROCEDURE PRELIMINARY: Output meter connection.Across speaker voice coil Output meter reading to indicate 500 milliwatts (standard output) . 1. 26 volts Connection of gene

2、rator ground lead.Floating ground Generator modulation.30% 400 cycles Position of volume control.Fullv clockwise Position Frequency Generator Trimmers Adjusted Function of of Dummy Output in Order Shown for of Variable Generator Antenna Connection Maximum Output Trimmer 05 p.f Pin 7 12BE6 A1,A2,A3,A

3、4 * Test Loop A5 * Test Loop A6 * Test Loop Check Point I.F. Oscillator Antenna * Standard Hazeltine Test Loop Model 1150 or 3 turns of wire about 6 in dia meter placed about one foot from the set loop. The alignment procedure should be repeated in the original order for greatest accuracy. Always ke

4、ep the output from the signal generator at its lowest pos sible value to make the AVC action of the receiver ineffective. STAN0AR0 LOO 160 -“V/M MlXfi GR0 THROUGH If GRID THROUGH ?tT$.TN6 U30P /o.OW CONDENSER 0 0& MNOMER AT WOO KC / 60 “V - AT 459 KC 1450 V - AT 455 KC _ /_ GU 128 I lfS v*_J rr l*6|

5、A5| 12646 ,.F-2 I2*V6 III , IN7ERL0 t1 VOL. SHAFT Lpo?_| EXTERNAL CONNECTIONS TO PRiNTEO 60AR0 VOLTAGES MEASURE0 WITH A V.T. V.M. INPUT VOLTAGES SHOWN ARE APPROXIMATE SENSITIVITIES P0RW5 WATT OUTPUT (0.4 VOLTS! WITH .05 CAPACITOR IN SERIES WITH GENERATOR RESISTANCE VALUES ARE IN OHMS Ki0O0, MEG 1,000,000, CAPACITANCE VALUE. L ES. THAN /! . AND VALUES OR (I I OR GREATER /.RE IN MICROMiCROPARADS . (wuH.UNLETS CtHE .VISE iNOICAE 0. 收音机爱 好者资料库 RadioFans.CN