The following 5 versions of 6 volt 4 AH battery charger circuits has been designed by me and posted here in response to the request from Mr. Raja, I have […]
Search Results for: LM324
Make this Thermo-Touch Operated Switch Circuit
The circuit explained here employs a rather different approach for implementing a touch operated switch action. Here instead of the resistance, the warmth of the finger is used for sensing […]
4 Universal Electronic Thermometer Circuits
Here I have explained four best electronic thermometer circuits which can be universally used for measuring body temperatures or atmospheric room temperatures ranging from zero degrees to 50 degrees Celsius. […]
Simple LDR Motion Detector Alarm Circuit
Here I have explained how to build a simple LDR based motion detector sensor circuit using ordinary parts such as LDRs and opamps, reasonably accurately. What are Motion Detectors Motion […]
How to Make a Ghost Detector Circuit
In this article I have explained to make a simple ghost detector circuit or a paranormal being detector circuit for quickly investigating a possibly infested area. Introduction Do you believe […]
Highly Sensitive Mobile Phone Detector Circuit
A cellphone or mobile phone detector is actually a high gain op amp amplifier which detects slightest of RF disturbance from a mobile phone, and illuminates an LED. NOTE: This […]