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Making Easy Circuits

Learn and build electronic circuits

Transmitter Bug Detector Circuit

Last Updated on July 31, 2023 by admin Leave a Comment

The Bug detector is a highly sensitive transmitter detector designed to detect transmitters with an output power as low as 10mW, even from a distance of approximately 15 feet. This […]

Filed Under: Detector

Current Detector Circuit on PCB Tracks

Last Updated on December 16, 2020 by admin Leave a Comment

This High-Gain Current Sensor circuit can be deployed to detect the availability of low-level current flowing though a PCB’s copper lines or traces. Two straight-pin probes are utilized to form […]

Filed Under: Detector

Simple Knock Detector Circuit

Last Updated on December 14, 2020 by admin Leave a Comment

The final circuit we will see deploys the ceramic sensor that is readily available. If you have experienced the difficult to detect the source of a low noise knock or […]

Filed Under: Detector

Sound Operated Switch Circuit

Last Updated on June 28, 2020 by admin 3 Comments

Sound triggered switches are employed in several applications, a few common illustrations being voice controlled tape recorders, baby alarms, burglar alarm systems, and VOX (voice managed switching) techniques of radio […]

Filed Under: Detector, Sensors

Stress Level Detector Circuit

Last Updated on July 5, 2020 by admin Leave a Comment

This stress level Detector Circuit can be used as a Bio feedback control circuit for knowing the emotional status of a human brain and whether the person is suffering from […]

Filed Under: Detector

Zero Crossing Detector Circuit

Last Updated on April 6, 2020 by admin Leave a Comment

Many complex circuits and integrated circuits contain zero crossing detectors, but we will deal only with the detector here. The detector produces a pulse each time the mains voltage goes […]

Filed Under: Detector, Voltage Regulators

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