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5 tubes QRP SSB Transceiver for 20m ham band
DC 2 speed Motor Controller
9 V NiCd or NiMH accumulator charger
1Hz Timebase For Readout And Counter Applications
Arduino 7 segment Displays Digital Clock With Charlieplexing LEDs
High Voltage AC Calibrator Circuit Using Op Amp
555 circuits 6
low cost audio headphone amplifier
DCDC single cell flashlight drive circuit diagram
555 IC using a delay circuit of the four b



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