Power Supplies (180)

Browse through a total of 180 power supply circuits. Great collection of power supply and PSU projects: battery chargers, regulators, solar power supplies.

DC to DC converters   battery chargers   battery indicators   battery monitors   variable power supplies   voltage and power inverters   voltage converters   voltage regulators  

Building a Smart Master/Slave Switch

T.K. Hareendran - 12/06/17

Here is an inexpensive and easy-to-build master/slave switch for integration into powerstrips for the automatic switching of “slaves” [...]

Home IoT – Voice Controlled Lab Lights with Amazon Alexa and ESP8266

Brent Voltz - 11/20/17

I recently won an Amazon Echo in a BBQ cooking competition and I was eager to get it [...]

Weekly Roundup – Top Links for the 2nd Week of November 2017

Adam Carlson - 11/10/17

From the Editor I must apologize for the late release of the weekly report this week.  I was [...]

Building a DIY LED Ring for DSLR Camera

Enrico Miglino - 11/06/17

LED Ring for a DSLR Camera For me, when I start a new project, I am not interested [...]

Weekly Roundup – Top Links for the 4th Week of October 2017

Adam Carlson - 10/26/17

Editor’s Note This week, I had the wonderful problem of having too much material to share in the [...]

XL4015 Power Supply Module – Secret Talks

T.K. Hareendran - 04/17/17

This is a succinct account of my experience with the cheap electronic power supply module from China, "DC-DC [...]
Inverter Schematic

Portable Power Inverter Circuit

T.K. Hareendran - 11/29/16

Recently, my neighbor expressed a deep interest in building a low-power inverter from scratch. This portable power inverter [...]
lipo charger circuit

Compact 2S LiPo Battery Charger

T.K. Hareendran - 09/28/16

The compact LiPo battery charger introduced here can be used to charge almost all standard 2S LiPo battery [...]
microcontroller power supply circuit

Smart Power Supply for Microcontroller Projects

T.K. Hareendran - 04/06/16

A good, reliable and easy to use dc power supply is probably the most important thing for every [...]
power surge protection circuit

Power-Back Surge Protection Circuit

T.K. Hareendran - 10/11/15

Power-Back Surge Protector is a simple yet effective solution for protecting your valuable and sensitive electric/electronic systems. Power-Back [...]
5V Power Bank with 3.7V Li-Ion Battery circuit

uC Li-Ion Power Bank w/ MC34063

T.K. Hareendran - 08/24/15

Lithium-Ion (Li-Ion) batteries have become popular for portable electronics and microcontroller projects because they boast the highest energy [...]
power supply voltage monitor circuit

uC 5V Power Supply Voltage Monitoring

T.K. Hareendran - 04/27/15

This circuit is a very simple voltage monitoring device for +5V VCC supply lines. It can be used [...]
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