Mini Projects

Articles
Title
Trigger 555 (CB1280E)
SCR Tester (MIN097E)
Electronic Relay (MIN096E)
CW Transmitter of FM or RF Oscillator (MIN095E)
The Pendulum Switch Alarm or Temporized Reed Switch (MIN097E)
VHF and FM Long-Range Transmitter (MIN095E)
Lies Detector (MIN095E)
Crystal Radio (MIN094E)
Scratch Filter II (CB954E)
Super-Bass Amplifier (CB921E)
Pulsed Decorative Lights (MIN085E)
Timed Light (MIN084E)
Brake Light for Robots (MIN083E)
LED FLASHER (MIN093E)
Who is the Fastest (II) MIN002 (MIN081E)
Charger for 2/4/6 Nicad Cells (MIN092E)
Machine Gun with Relay (MIN082E)
Mini Experimental LightTelegraph (MIN091)
Triple Visual Indicator (MIN090E)
Two Levels Light (MIN089E)
Ghost Hunt (MIN088E)
Simplified Telegraph (MIN087E)
High Power LED flasher (MIN086E)
Turning on and off an AC Lamp With a Reed Switch (MIN079E)
0 to 9 V Power Supply (MIN077E)
Touch Switch (MIN078E)
Building a Solenoid Cannon (MIN076E)
Fluorescent Stroboscopic Light (MIN075E)
Stroboscopic Lamp Using LEDs (MIN074E)
Light-Beam Telegraph (MIN072E)
Magic Lamp (MIN071E)
Digital Voltmeter (MIN070E)
Magnetizer (MIN069E)
Two-Transistor AM Radio (MIN068E)
Heat Detector (MIN067E)
Two Sped Control For DC Motors with Voltage Change from the Source (MEC030E)
Mini Power-Supply (MIN066E)
The Simplest High Voltage Generator (MIN073E)
Astable Multivibrator Using Transistors (MSB056E)
Elemental Computer (MIN065E)
Signal Tracer (MIN030E)
LED Blinker (MIN063E)
Simple VU-meter (MIN064E)
Humidity Detector (MIN061E)
0 to 9 V Power Supply (MIN059E)
Charging and Discharging a Capacitor (MIN060E)
Schok Bomb (MIN057E)
Power a Fluorescent Lamp With a Cell (MIN058E)
Neon Lamp Two Tone Siren (MIN055E)
Mini Electrifier (MIN056E)

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Instrumentation

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Circuit Bench

Operational Amplifiers Symmetric Power Supply 78xx and 79xx (CB15342E)
This source can supply currents up to 1 A. The circuit is from Motorola's 1993 Linear Interface ICs....
Solar Cell Test (CB18491E)
In the figure below we have a simple way to perform a function test for a solar cell. The circuit is...
Biestable using a comparator (CB5975E)
This biestable can use a common comparator like the LM339 and the power depends on the load, which...