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 […]
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. […]
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 […]
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: […]
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 […]