Arup, Author at Circuits DIY

3 volt easy DIY FM receiver by TA2003 I.C

Updated - August 3, 2017 by Arup

Here is a very easy DIY FM receiver circuit diagram. It is easy to build FM receiver circuit as the TA2003 IC used here, comes in easy DIP package. It’s […]

Emergency Tube light & Blinker Bulb with Fan

Updated - February 11, 2011 by Arup

The originator of this circuit idea is Mr. Uttam Sadhukha, Howrah. He is a circuit designer, and works for helping hobbyists. This circuit is for 3in1 emergency light. For loadshadings, […]

Bass treble control without any IC, Transistor

Updated - December 17, 2016 by Arup

This low cost bass treble circuit consists of some capacitors, resistors, and two T/C pot for BASS and TREBLE control. this circuit can be made without even a veroboard. You […]

6 Volt 9 Watt Emergency light circuit

Updated - February 9, 2011 by Arup

The author of this circuit is Mr Rajeeblochan Dheebar, Bankura. He is a circuit designer, and works for helping hobbyists. Here a total emergency light circuit is made. It has […]

Inverter Oscillator Board using Flip Flops 74LS112

Updated - March 6, 2017 by Arup

I’ve found this board in many inverters, and it works great with transistor type inverters. I have tested this kit with Mosfets, but the gate triggering was low, and […]

220 Volt to 110 Volt auto Bulb changer circuit

Updated - January 23, 2011 by Arup

This is for switching to different voltage’s bulb for proper lighting in different voltages. Sometimes the electricity supply goes in series line and merely gives some 90-100 Volts instead […]

Simplest Remote control checker

Updated - September 20, 2017 by Arup

I have never found a such remote tester circuit that can be as easily made as this following. Remotes work with a digital signal which is nothing but 1?s & […]

Easy PCB making example with non-expensive materials

Updated - January 9, 2011 by Arup

Here I demonstrate a easy PCB making with non-expensive materials. Normally homemade PCB requires Copper laminate board, Ferric chloride, Resist(Most hobbyists use Toner transfer that requires Hot Iron, PC and […]

Working of Digital Weight Scale

Updated - February 19, 2017 by Arup

Today I bought a digital weight scale(DWS) from ebay.in at Rs.550(~12$). The item worked very well as promised. This is some kind of china imported piece. It’s a plastic body […]

CFL emergency kit PUSH PULL application 12Volt 18Watt

Updated - December 8, 2016 by Arup

Push-pull applications makes a more reliable waveform output than that of a flyback converter. Thus it can be used. The below circuit have a push-pull transformer, with two Switching transistors, […]