The simple circuit presented in this article safeguards a lead acid battery from self-discharging, especially when the battery is not being used or charged for long periods of time. The […]
How to Make a Simple Musical Greeting Card
It is fairly simple to construct a ‘singing’ melodious greeting card, as explained in the following article. You can replicate this greeting card design through matching chips which carry about […]
Switch ON/OFF any Appliance Remotely using Mains Wiring
Using the explained transmitter and receiver circuits, you can quickly exploit the existing mains home AC wiring to send signals across different rooms, for remotely switching ON/OFF any desired appliance […]
Accurate 24 Hour Timer Circuit
The post explains a simple 24 hour precision timer circuit using just a couple of CMOS ICs, which can be used for switching ON or OFF any mains operated load, […]
Electronic Toss Circuit
We have seen a coin is tossed before beginning a football match. This electronic version of it comes with a row of 7 LEDs – the middle one is green, […]
Heart Beat Pulse to Sound Converter Monitor Circuit
In this write-up we discuss a comprehensive circuit which allows the user to convert heart beat pulses into loud audible sound from a connected buzzer. Thus , the design could […]