This is a basic square-wave oscillator based inverter kit. Based on the 4047 I.C oscillator, we discussed here, it is a finalized PCB version of that inverter with MOSFETs. Here […]
Professional PCB making at home
We know that PCB has a great role in our circuits. It not only keep parts arranged, but also makes the connections smartly navigated so that future parts change requires […]
Cheapest Mobile signal booster external antenna
There are some pretty signal boosters available in market which can only boost or amplify weak signal. But these products can’t bring unavailable towers. You can buy external antenna for […]
Cheapest High power LED driver circuit diagram
If you're looking for a simple high power LED driver circuit, then it's here. Driving a high power LED is not that easy. First you've to apply proper voltage to get the […]
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 […]
5v to 12v converter - Simple DC voltage booster circuit
You can use this 5V to 12V converter circuit to easily get 12 volts from a 5V similar source. This is based of the theory that inductor holds current and […]
Setup diagram of an Alfa branded 12 Volt 20 Watt CFL kit
This CFL lighting kit is available from a reputed brand alfa, which is known for it’s circuits in applications of inverter like products. We get a good stable circuit from […]
High Performance LA4446 Stereo Audio Amplifier Circuit
LA4446 is of similar series IC as LA4440, but it is meant for dual or stereo 5.5Watt RMS outputs. While 4440 gives 6Watt outputs at dual mode, this gives almost […]
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, […]
Use old 6V sunca charger battery for LED lighting
Many of us have 6Volts emergency light units in our house. The batteries there are of 6Volts 4 to 4.5AH. These batteries are SLAMF battery (Sealed Lead Acid Maintenance Free), […]
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