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One Shot Timer Touch Switch Circuit

Last updated on 21 February 2026 by Admin-Lavi Leave a Comment

Today we designed a simple One Shot Timer Touch Switch Circuit. It works like one shot timer, when we touch the touch point the output becomes HIGH for few seconds and after that, it goes LOW automatically. This circuit uses IC 4011 and it is CMOS NAND gate IC which works on 9V battery. Circuit […]

Filed Under: Sensors and Detectors, Timer Circuits

Touch ON OFF Switch Circuit using IC 555 Timer

Last updated on 20 February 2026 by Admin-Lavi Leave a Comment

Today, in advanced world electronic touch switches are becoming very popular. They replace mechanical switches and therefore, there is no moving part, so its life is longer. This Touch ON OFF Switch Circuit using IC 555 Timer works as a bistable multivibrator. When we touch the touch point the output changes its state, that means […]

Filed Under: Sensors and Detectors, Timer Circuits

AC to DC Bridge Voltage Doubler Power Supply Circuit

Last updated on 20 February 2026 by Admin-Lavi Leave a Comment

AC to DC Bridge Voltage Doubler is simple power supply circuit. It is used to get higher DC voltage from low AC voltage, for example from 9V AC we can get near 18V to 25V DC. Therefore, it is useful when we need high voltage but transformer gives low voltage. Also, this circuit is with […]

Filed Under: High Voltage

9V AC to 38V DC Voltage Tripler Circuit

Last updated on 18 February 2026 by Admin-Lavi Leave a Comment

This project is for simple 9V AC to 38V DC Voltage Tripler Circuit and it converts low AC voltage into higher DC voltage. The input is 9V AC from transformer and the output is around 38V DC without load. It is easy to build as it uses common parts and therefore, it is good for […]

Filed Under: High Voltage

9V AC to 50V DC Voltage Quadrupler Circuit

Last updated on 18 February 2026 by Admin-Lavi Leave a Comment

Like our previous post on Half Wave and Full Wave Voltage Doubler Circuit this post is about a full-wave voltage quadrupler power supply circuit. It converts low AC voltage into high DC voltage for example, 9V AC is converted into approximately 50V DC. Therefore, it multiplies the input voltage almost four times, so it is […]

Filed Under: High Voltage

Half Wave and Full Wave Voltage Doubler Circuit

Last updated on 18 February 2026 by Admin-Lavi Leave a Comment

In many electronic projects, we need a higher DC voltage, but sometimes transformer gives low AC voltage. For example, a 9V AC transformer is common, therefore, we use voltage doubler circuit and this increases voltage without using high voltage transformer. Besides increasing the voltage, this circuit also converts AC into DC. There are two types […]

Filed Under: High Voltage

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