The following posts explains how to build a simple to build FM stereo transmitter circuit using IC BA1404. About the IC BA1404 An exceptional stereo audio FM wireless transmitter circuit […]
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How to Recharge Dead Batteries
In this post we learn how to recharge and use bad, defective discarded batteries using an innovative battery charging process invented by John Bedini. Lead acid batteries can sometimes be […]
IC 555 Low Battery Indicator Circuit
The article explains a simple low battery indicator circuit using the IC 555 and a few resistors only. Circuit Concept Many electronic circuits such as emergency lights, battery chargers, UPS systems, […]
Grid Mains to Generator Changeover Relay Circuit
The post explains a simple configuration which can be used as a automatic changeover circuit for switching AC grid mains to generator mains, during power failures or outages. The explained circuit will effectively […]
Make this Car Air Ionizer Circuit
The post discusses the construction of a car air ionizer circuit which can be used for cleansing the atmosphere of car interior from smoke, pollution, dust particles, bad odor, pollen particles etc. The circuit […]
How to Connect 5mm LEDs to a 3.7V Li-Ion Cell
The article explains regarding how to connect and illuminate a few 5mm LEDs using a 3.7V Li-Ion cell, normally used in cell phones. I keep receiving requests from the readers […]