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Articles
Title
Fuzz (CB12093E)
Touch Switch (CB12021E)
Sensitive Power Drive PNP (CB11984E)
High Power Learning Circuit (CB11910S)
Strobe with Incandescent Lamp (CB11849E)
Timer (CB11835E)
Touch Oscillator (CB11575E)
Precision Sample and Hold (CB11544E)
Relaxation Oscillator (CB12691E)
Humidity Sensor (CB12627E)
Megaphone (CB12607E)
Modulated Oscillator (CB12579E)
Versatile Triangular Oscillator (CB12526E)
Sinusoidal Oscillator 555 (CB12509E)
Light Relay (CB12481E)
Shutdown After 60 Seconds using an UJT (CB12335E)
Electronic Cricket (CB12319E)
Signal Plotter (CB12297E)
Inverter using the CA3140 and Reinforced Output (2) (CB12309E)
Sensitive Reed Relay Drive (CB12183E)
Interface SCR and Relay (CB12106E)
Traffic light (CB12071E)
Amplifier for Magnetic Transducer CA3140 (CB11972E)
Signal Injector (CB11934E)
MOSFET Power Switch (CB11892E)
Basic Voltage Comparator LM324 (2) (CB11616E)
SCR Power switch (half wave) (CB11595E)
Audio Priority Switch (CB11504E)
3 Way Speed Game (CB11485E)
Precision current drains (CB12975E)

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      The low-pass filter shown in the figure uses two operational amplifiers with JFET at the input to...

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      This circuit with transistors of the time was found in the magazine Radio Electroinics of June of...

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