Calrad_sa_30 电路图 维修原理图.pdf

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1、L2 25H R2 200 R4 500 R13 500k R14 500k C1 0.05u C2 0.05u T1 R15 10k R16 250k X3 6BM8P X4 6BM8P R21 2k R23 100k C3 50u C4 60u C5 0.12n X5 6BM8 R24 150k R25 150k R26 500 X6 6BM8 X7 12AX7 R27 3k C8 30u R28 10k C9 50u To Ch. B C10 50u Bal. VR2 1Meg VR4 1Meg B Vol. R33 250k To Ch. BTo Ch. B VR2 1Meg A C1

2、6 2n VR3 1Meg A R12 10k R35 100k R22 100k C17 2n Bass Treble C18 200p C19 20n C20 200p C21 50n C23 50u 250V 250V VR1 6.3V Calrad SA-30, Stock 280V OUT 16 OUT 8 R4 is shared with Chb and is in parallel with two 12.6V heaters in series (combined R approx 126R) Voltage across R4 should be 25.2V NFB 6.5dB 3.6k P-P OUT 4 To 6BM8s and 12AX7 280V 收音机爱好者资料库 Ra d i o Fa n s .CN