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Posts tagged BS170,

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 […]

Low Power Amplifier Circuit

Best Low Power Amplifier Circuit Diagram Driver PCB and Lay out Power Amplifier Circuit Diagram using 1 N4937 2 N5551 2 N5401 2 SC4793 2 SA1837

Phantom powering schematic

Phantom powering schematic To Mic preamp

Audio filter

Audio filter using TL072 circuit diagram This audio filter using TL072 is a 24 dB octave filter with a Bessel character and cutoff frequency of 200 Hz. So, if you are interested in experimenting with audio circuits in audio filter using TL072 range, this circuit is for you. In audio filter using TL072  range, all […]

lm386 projects

lm386 projects lm386 audio amplifier circuit LM386 Circuits and Projects Collection Scheme Audio Power Amplifier

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