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Audio Amplifier

Audio Amplifier circuit using 2N3055 MJ2955 Audio Amplifier circuit using 2N3055 MJ2955, A564, D438, C1162 R1 ………… 100K 26 ………… 30K 27 ………… 560 4 …………. 10K 5 …………. 1K 8 …………. 2K4 9 …………. 4K7 10 11 12 …… 100 13 14 ……… 300 15 16 ……… 0.5 5v C1 ………… 100n 2 …………. […]

Booster Antenna

Booster Antenna Circuit Antennas that are much shorter than 1/4 wavelength present a very small and highly relative impedance that is dependent on the received frequency. It is difficult to match impedances over a decade of frequency coverage. Instead, input stage Q1 is an FET source-follower. A high-impedance input successfully bridges antenna characteristics at any […]

TV signal amplifier circuit?

Nish asked: Need a circuit diagram to amplify both VHF and UHF signals received from the outdoor VHF/UHF antenna. This circuit should have a high gain output.

What device is used to check capacitors in electronic circuits?

anuraganimax asked: How can I check whether or not a capacitor is faulty?

Preamp mic schematic and Audio Megaphone

Preamp mic schematic and Audio Megaphone using BC547, TDA7052 P1_____________22K R1_____________22K R2,R3_________ 100K R4_____________47K R5______________2K2 R6______________6K8 R7_____________22K R8______________2K7 C1,C6_________ 100nF  63V C2,C3__________10µF  63V C4_____________22µF  25V C5_____________22nF  63V C7____________ 470µF  25V Q1_ BC547 IC1 TDA7052 SW1____________SPST MIC____________electret microphone SPKR___________8 Ohm Loudspeaker

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