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Circuit diagram 75 Meter QRP SSB Transceiver

The 75 Meter QRP SSB Transceiver Theory of Operation 6-30-03 In general, the transceiver switches the 4-element 1500 ohm xtal BPF ends between the inputs and outputs of the two SA602s to reverse the signal flow for R/T operation. Since no IF amplifier is used in the design, 20 dB of additional receiver gain is […]

Power Supply TV China circuit

Power Supply TV China circuit Power Supply Circuit Diagram Supplay tv circuit diagram free

Transistor power amplifier

Transistor power amplifier using IRF350, KD367B, TIP141

Three Possible ways to link multiple effects guitar amp

Three possible ways to link multiple effects guitar amp. Includes buy or build a parallel cable from the effects of all inputs into one output loop drives them all. This work and should not cause great difficulties if the output impedance of the amplifier low loop. Output 1k ohm or less should be able to […]

20W 18V Audio Amplifier Circuit using uPC1230H

20W 18 V Audio Amplifier Circuit using uPC1230H

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