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Prevent Battery Self-Discharge using this Circuit

Last Updated on November 5, 2020 by Admin Leave a Comment

self discharge protector compressed

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 […]

Filed Under: Battery Chargers

How to Make a Simple Musical Greeting Card

Last Updated on November 3, 2020 by Admin Leave a Comment

UM36 melody songs compressed

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 […]

Filed Under: Audio and Amplifier

Switch ON/OFF any Appliance Remotely using Mains Wiring

Last Updated on November 2, 2020 by Admin Leave a Comment

mains transmitter compressed

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 […]

Filed Under: Remote Control

Accurate 24 Hour Timer Circuit

Last Updated on October 31, 2020 by Admin Leave a Comment

long inerval compressed

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, […]

Filed Under: Timer

Electronic Toss Circuit

Last Updated on October 30, 2020 by Admin Leave a Comment

led dice circuit compressed

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, […]

Filed Under: New Circuits

Heart Beat Pulse to Sound Converter Monitor Circuit

Last Updated on November 3, 2020 by Admin Leave a Comment

hart beat compressed

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 […]

Filed Under: Medical

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