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Articles
Title
100 W inverter (CB10019E)
Programmable Timer (CB10000E)
1 kW power meter (CB9944E)
Touch Switch (CB10924E)
Voltage Follower with Operational Amplifier (CB9924E)
Residential Alarm (CB9884E)
FM Transmitter (CB9875E)
Instrumentation amplifier (CB9830E)
Simple heads or tails (CB9807E)
Second-order variable filter (CB9768E)
20 kHz band pass filter (CB9778E)
Long time intervals with precision (CB9682E)
Fast logarithmic converter (CB9613E)
Limit comparator (CB9591E)
Low Voltage Regulator (CB10976E)
Crystal 20 MHz Oscillator (CB10920E)
CMOS Tone Generator For Alarm 4001 (CB10742E)
Capacitance Bridge (CB10666E)
Sound Level Indicator (CB10649E)
Audio Preamplifier (CB10626E)
Traffic light (CB10563E)
Class A amplifier 2N3055 (CB10542E)
General Purpose Preamplifier (CB10500E)
Over-temperature alarm (CB10485E)
Humidity Sensor (CB10466E)
Lights On Reminder (CB10425E)
3W and 5W amplifier (CB9904E)
Automatic security flasher (CB9783E)
Biquad band pass filter (CB9757E)
Long time timer (CB9683E)

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Circuit Bench

  • Battery Voltage Monitor (CB1425E )

       This circuit came out in a 1978 American publication, but can be assembled with transistors BC547 or...

  • Tone Relay 2 (CB11900E)

      The trigger signal for this circuit is an audio tone. Tones up to close to 100 kHz can be used. The...

  • Amplifier for the 2 meter range (CB10059E)

      This circuit was found in a 70s documentation. The transistor is from that time. L1 has 4 turns of...

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