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Posts tagged 초고속 인터넷

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.

Integrated amplifiers

Integrated amplifiers using stk439 Integrated amplifiers using stk439 Integrated amplifiers R 1 ……….. 2 K 2 R 2,4 ……… 220 K R 3 ……….. 390 K R 5 ……….. 100 R 6 ……….. 120 R 7 ……….. 12 K R 8 ……….. 10 C 1 ……….. 470 pF C 2 ……….. 100MF/50V C 3 ……….. […]

Electronics Schematic Diagram 6-10W stereo power audio amplifier with IC TDA2005

Electronics Schematic Diagram 6-10W stereo power audio amplifier with IC TDA2005 Component list: R1, R9 ________ 1K ohm R2 ____________ 120K ohm R3, R4 ________ 1K2 ohm R5, R6 ________ 33 ohm R7, R8 ________ 1 ohm IC ____________ TDA2005 Pot ___________ 10K ohm stereo C1 C2 __________ 2u2/50V C3 _____________ 10uF/25V C5, C6, C8 […]

Electronic Component LA4440

18W Audio Amplifier circuit using LA4440 Electronic Component 18W Audio Amplifier circuit using LA4440

Segment Counter circuit

Segment Counter circuit 7 Segment LED Counter circuit Diagram using NE555, CD4033

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