This ultrasonic remote control circuit can be used to switch and control any appliance ON/OFF through a relay in the receiver circuit. Written by: S.S. Kopparthy Using Ultrasonic Waves This […]
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Remote Controlled Ceiling Fan Regulator Circuit
The article discusses a simple infrared controlled fan regulator or dimmer circuit using ordinary parts such as a 4017 IC and a 555 IC. Circuit Operation Referring to the shown […]
Heart Rate Monitor Circuit
In this article we comprehensively discuss a relatively accurate electronic heart rate sensor circuit processed by a few discretely wired opamp circuit stages, and subsequently we’ll learn how this can […]
Laptop Anti-theft Security Alarm Circuit
The post explains a simple laptop anti-theft alarm circuit which can used with any concerned object such as a laptop which needs to be protected, when an intruder tries to […]
Key Finder or Pet Tracker Circuit
Pets and kids (under 4) have one thing in common, they are curious by nature and love venturing into unknown zones ending up in some sort of mess or trouble. […]
Multiple Appliances Remote Control Circuit
The post discusses a simple IR remote control circuit which can be used for controlling many appliances independently through a single transmitter handset. The idea employs ordinary components like IC […]