George A. Philbrick Researches GAP/R K2-P Stabilizing Amplifier, NIB & TESTED OK For Sale

George A. Philbrick Researches GAP/R K2-P Stabilizing Amplifier, NIB & TESTED OK


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George A. Philbrick Researches GAP/R K2-P Stabilizing Amplifier, NIB & TESTED OK:
$45.50

George A. Philbrick Researches GAP/R K2-P Stabilizing Amplifier. With good TESTED 12AX7A tube & Oak 660 Chopper.
Box is shelfworn.
Powered up & TESTED with 6.3 VAC 60 Hz & +300 VDC power supplies, -300 VDC not used, output clean & steady with no drift.
Datasheet: 300 VDC power supply:
Power transformer requires 700 VCT + 6.3 VAC - need 1See item # 193593156359 for 2 1000UF 450VDC capacitors - need 2See item # 294188695394 for 5 1N4007 power supply diodes - need 4 for fullwave bridge rectifierSee item # 265612360739 for 20 Hy 115 mA power supply filter choke - need 1Use 100 kOhm 2 Watt resistors across the capacitors for bleeders - need 2
43+ minute power it up & run it (K2-W): K2-P only needs 6.3 VAC & +300 VDC power supply.
K2-P does not use a neon light & is not even slightly radioactive.


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