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 […]
Simple dekstop audio amplifier by A6283 I.C
I got two creative speakers from a friend who didn't need that. Since they are only speakers, and not with inbuilt amplifiers, it's not possible to run those speakers from PC/mobile […]
Inside a $10 phone
Last week I bought a cheap china phone as my primary phone went to service center for 3 days. It's this: http://icellmobiles.com/product_detail.php?&getID=133 I got the phone for Rs.500 (~US$8.4) including […]
How to repair mobile charger circuits
The above image shows the inside of a typical mobile charger. These chargers can burn anytime and then they need to be replaced or repaired. This tutorial is about how […]
Make power saver circuit to cut down electricity bills
There are some power saver devices shown in TV advertisements that they can save electricity bills. But, does they really cut down electricity bills as advertised? Does they really cut […]
Miniature electric fence circuit used in Mosquito Racket
There are these types of mosquito killer racket are easily available in market at some 150 rupees. This consist an electric fence in the bat portion which has 5000-10,000 volts […]
Miniature USB powered amplifier circuit for Laptops
There’s been a strategy in market of buying USB powered speakers for laptops. These speakers usually drives power from one available USB port and inputs audio signal from headphone port, […]
Easy Loudspeaker circuit for telephone
This below circuit is a easy handsfree telephone receiver system. This doesn’t have dialing circuit so, it’s not a total phone replacement circuit, but it’s just only a loudspeaker system […]
Simple 10 Rupees microphone for PC, Skype, VoIP
With addition to a webcam in a PC, it is required to have a mic also. If we have headset cum mic, then no problem, but if we don’t? Well, […]
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 […]