Battery Archives – Circuits DIY

Mobile charger circuit diagram, 100-220V AC

The market is flooded with cheap mobile charger circuit. Some of you may be looking for this type of charger circuit diagram and components list. These mobile chargers uses only…

Arnab December 29, 2016

Battery LED Driver

1W to 5W led driver circuit with 12V input

This led driver circuit explains how you can power up 0.5W to 5W LED strips directly from a 12V lead-acid battery without wasting much power or blowing up the LEDs.…

Arnab November 19, 2016

Battery Computer DIY

DIY PoE injector for 10/100M Ethernet

So it's pretty frustrating to run a separate power cable to outdoor/distant networking devices like outdoor access points, IP cameras, VoIP phones. That's when PoE is useful, and now we're going…

Arnab November 10, 2016

Battery USB

USB li-ion charger revision

An year ago, I've shared a circuit of USB li-ion charger based on LM358opamp. The circuit had some problems as reported by commentators that inclide wrong direction of LEDs. Features:…

Arup October 6, 2012

Battery Gadgets Inverter

Router UPS setup, battery in your ADSL modem or router

This router ups setup diagram, not an circuit diagram. It’s about a circuit that keeps your WiFi router or Broadband modem always on even in power cuts so that we can…

Arup March 18, 2011