A few of the interesting and useful hobby electronic circuit diagrams already published in this blog have been selected and compiled here for quick reference and understanding. What is a […]
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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 […]
Build Simple Transistor Circuits
A compilation of important assorted transistor simple circuits to build has been included here. Simple Transistor Circuits for New Hobbyists Many simple transistor configurations like, rain alarm, delay timer, set […]
Solar Panel Voltage Regulator Circuit
The post details how to construct a simple solar panel regulator controller circuit at home for charging small batteries such as 12V 7AH battery using small solar panel Using a […]
5 Simple Water Level Controller Circuits
An automatic water level controller is a device which senses undesired low and high water levels in a tank, and switches a water pump ON or OFF accordingly to maintain […]
10 Automatic Emergency Light Circuits
The article describes a 10 simple automatic emergency light circuits using high bright LEDs. This circuit can be used during power failures and outdoors where any other source of power […]