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Posts tagged 트랜시버 튜너

Schematic diagram for a broadband QRP SWR metering circuit and SSB TRANSCEIVER 80M / 40M boster filter IF Radio

A schematic diagram for a broadband QRP SWR metering circuit for use in a QRP antenna tuner. One could simply hold a momentary DPDT switch down and watch the LED while tuning the capacitors of the antenna tuner for minimum or zero light.

N95 Nokia circuit

N95 Nokia circuit diagram Audio stereo amplifier circuit for Nokia N95 with IC TPA2012 Audio stereo amplifier circuit for Nokia N95 with IC TPA2012 N95 Nokia circuit diagram

3 channel microphone circuit

3 channel microphone circuit using BC550C, BC547, BC557 P1,P2,P3______5K R1,R11,R15____180K 1/4W R2,R12,R16____2M2 1/4W R3,R13,R17____750R 1/4W R4,R14,R18____1K 1/4W R5____________15K 1/4W R6____________220R 1/4W R7____________1K5 1/4W R8____________820R 1/4W R9____________150R 1/4W R10___________100K 1/4W C1,C6,C8______1µF C2,C4,C7,C9___100µF C3,C5_________220µF Q1,Q4,Q5______    BC550C Q2____________ BC547 Q3____________ BC557

20W Audio Amplifier Circuit using TDA1552Q

20W Audio Amplifier Circuit using TDA1552Q

Schematic for BLF369 BLF369 BLF369

Schematic for BLF369 BLF369 BLF369 Schematic for BLF369 BLF369 BLF369

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