Circuit Bench

Articles
Title
Guitar preamp (CB22146E) Found in an English publication from 1989, this circuit uses a still common operational amplifier. The power supply does not have to be symmetrical. a href="images/stories/bc/04291029"
SCR DC flasher (CB22109E)
Drain dip oscillator (CB22029E)
Electronic organ CA3130 (CB22002E)
Delayed relay 2N2646 (CB23912E)
Transmitter Monitor (CB23890E)
DC DC power supply (CB3880E)
Power supply from 0 to 30 V x 3 A (CB23795E)
Four load control by relay (CB23781E)
Signal injector (CB23745E)
Using a magic eye tube transistor circuit (CB23709E)
Super simple amplifier (CB23699E)
Monostable (CB23689E)
Passage counter (CB23639E)
High impedance voltmeter (CB23618E)
Frequency standard (CB23580E)
SCR motor control (CB23564E)
Oscillator with tunnel diode (CB23529E)
Micro receiver for the 11 meters band (CB22531E)
Audio Booster (CB22489E)
Metal Detector (CB22460E)
Divide by 4 with the 7473 (CB22442E)
2-bit decoder 7400 (CB22421E)
100 kHz Oscillator (CB22378E)
Multistage amplifier (CB22229E)
Applause generator (CB22205E)
Timer (CB22197E)
People detector (CB22134E)
Power switch Using SCR (CB23952E)
Pulse Amplitude Comparator (CB23834E)

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