Circuit Bench

Articles
Title
Telephone Scrambler (CB25490E)
Light Beam Alarm (CB25487E)
20 LED voltmeter in second version (CB25458E)
Automotive Power Drive (CB25416E)
Microphone Preamplifier (CB25952E)
Low Pass Second Order Filter 741 (CB25818E)
Single Shot Timer 4001 (CB25744E)
First Order High Pass Filter (CB25594E)
LM317 Power Supply (CB25552E)
Schmitt Trigger with 555 (CB25527E)
Speaker Protector (CB25397E)
40W Voltage Inverter (CB25375E)
Bridge Signal Source (CB25892E)
Alternative RIAA Equalizer (CB25698E)
Rumble and Scratch Filter (CB25601
555 Lockout Oscillator (CB25514E)
Selective Light Amplifier (CB25488E)
LM3914 Audio Level Meter (CB25459E)
20 LED Effects Circuit Using 4017 (CB25438E)
555 High Voltage Generator (CB25842E)
100 Hz Fourth Order High Pass Filter (CB25819E)
4046 Decay Circuit (CB25769E)
Active MW Antenna (CB25721E)
Digital Motor Control (CB25629E)
Collpits Oscillator (CB25553E)
Voice Changer (CB25548E)
555 Sine and Square Schmitt Trigger (CB25528E)
Relay with optical coupler (CB25491E)
Multiple Level Indicator (CB25417E)
Power Supply Monitor (CB25398E)

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