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LED Strip Light Dimmer Controller Circuit

Last Updated on April 18, 2022 by Swagatam 50 Comments

The post explains a simple IC 555 based PWM controller circuit which may be used for controlling the intensity of a specified LED bank or an 12V LED strip light. […]

Filed Under: 555 IC Circuits, LED and Light Effect, LM317/LM338

PWM Solar Battery Charger Circuit

Last Updated on December 23, 2021 by Swagatam 132 Comments

This simple, enhanced, 5V zero drop PWM solar battery charger circuit can be used in conjunction with any solar panel for charging cellphones or cell phone batteries in multiple numbers […]



Filed Under: Battery Chargers, LM317/LM338, Solar Controllers, TL494 IC

Charging a Cellphone battery with a Laptop Battery

Last Updated on August 7, 2019 by Swagatam 5 Comments

The post presents a simple circuit that may be used for charging a cellphone battery with a laptop battery. The idea was requested by Mr. Gyashuddin. Recharging Cellphone Battery with […]

Filed Under: Battery Chargers, Inverter Circuits, LM317/LM338, Transmitter Circuits

Lithium Polymer (Lipo) Battery Charger Circuit

Last Updated on August 7, 2019 by Swagatam 71 Comments

The post explains a simple lithium polymer (Lipo )battery with over charge cut off feature. The idea was requested by Mr. Arun Prashan. Charging  a Single Lipo Cell with CC […]

Filed Under: Battery Chargers, LM317/LM338

How to Make Adjustable Current Limiter Circuits

Last Updated on October 18, 2020 by Swagatam 20 Comments

In many sensitive electronic circuits or loads, adjusting the current limit in its power supply could be one of the most crucial requirements for ensuring a fail proof safety for […]

Filed Under: Electronics Tutorial, LM317/LM338

2 Best Current Limiter Circuits Explained

Last Updated on January 17, 2023 by Swagatam 312 Comments

LED current limiter circuit

The post explains 2 simple universal current controller circuits which can be used for safely operating any desired high watt LED. The universal high watt LED current limiter circuit explained […]

Filed Under: LED and Light Effect, LM317/LM338



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