270 Electronics Project with Circuit Diagrams

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Pages: 225

Contents:

DC-DC converter

2. Periodically On-Off Mosquito Repellent

3. IR sensors (infrared LEDs) to make an object-detection circuit

4. Simple Key-Operated Gate Locking System

5. Mains Box Heat Monitor

6. Faulty Car Indicator Alarm

7. TACHOMETER

8. 1W LED For Automotive Applications

9. Play With Robotic Eye (IR Sensor)

10. Timer From Old Quartz Clock

11. Keep Away Ni-Cd From the Memory Effect
12. Crystal AM Transmitter

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