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Articles
Title
Pendulum Alarm (ART482E)
Line indicator (ART481E)
Anti-spy (ART480E)
Transformerless Power Supply (ART478E)
Xenon straboscopic Flasher (ART477E)
Electronic Smell (ART476E)
Color Light Alternated Spots (ART474E)
Increased Switch (ART473E)
Optical Power Switch (ART488E)
Amplifier for 0-5 V sensor (ART487E)
Gun Detector (ART471E)
Bidirectional Current Monitor (ART485E)
Optical pulse amplifier (ART484E)
Ultrasonic Communicator (ART475E)
Powerful Ultrasonic Emitter (ART470E)
Timed Touch Light (ART469E)
Sensitive Magnetic Switch (ART468E)
Sonic Control (ART467E)
Micro rhythmic light (ART466E)
Metronome (Educational Projects) (ART465E)
Water and Salt Transmitter (ART464E)
Micro-tester (ART463E)
Shortwave Transmitter - (Educational Projects for STEMERs) (ART462E)
High voltage solenoid - (Educational projects for STEMers) (ART461E)
Battery Reactivator (Art460E)
Wireless Guitar (ART459E)
Shooting Simulator (ART458E)
Proportional Thermostat (ART457E)
Electronic Zoo (ART456E)
DAC (ART455E)

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      This circuit activates a fan when the temperature exceeds a certain value, sensed by diode Q1. The...

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