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Posts tagged 1500,

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 […]

Microphone Circuit with tone control

Microphone Circuit with tone control using TL072

0v to 60V Power Supply Circuit

0v to 60V Power Supply Circuit using MJ2955, 78xx 0v to 60V Power Supply Circuit Power Supply Circuit +0 to 60V using MJ2955, 78xx

Mini Guitar Amp circuit using TDA7052

Mini Guitar Amp circuit using TDA7052 R1    22K C1    10µF  25V C2    100nF  63V C3    220µF  25V IC1   TDA7052 SPKR    8 Ohm  Loudspeaker B1            9V, 3V  Battery

PUSH-ON and PUSH-OFF ELECTRONIC SWITCH Circuit Diagram using IR – Infrared photography

PUSH-ON and PUSH-OFF ELECTRONIC SWITCH Circuit Diagram using 555, PICAXE-08, 1N4148, 1N4004, PN100, 7805

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