Touch switch circuit by using an NPN transistor

The touch sensor also touch-sensitive switch or touch switch circuit the current is passed our finger body and the NPN transistor is turned ON when current is passed out through our body to the base of the transistor and the LED glows.” Touch Switch Circuit “. Step 1: Materials and the Circuit MATERIALS ARE:- 1. … Read more Touch switch circuit by using an NPN transistor

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Portable USB Rechargeable LED light / emergency light

USB Rechargeable led light /flashlight, Power & useful Utility gadget/project and can be charged via a smartphone charger or power bank port. Read full detailed instructable and in the end, you would find a demonstration video I hope you would like it. USB rechargeable LED light. USB rechargeable LED flashlight. As the name implies its … Read more Portable USB Rechargeable LED light / emergency light

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Variable Power Supply using LM317 1.5 – 15v dc

Introduction to variable voltage regulator :– A variable power supply unit is a very useful tool that provides the constant derived voltage output with constant current rated by the unit. A variable power output tool is a necessity for electrical and electronics hobbyists and professional work.These are circuits built using active and passive components(diodes,transistor,capacitors,resistors,ICs,etc. HOW … Read more Variable Power Supply using LM317 1.5 – 15v dc

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Easy Tesla Coil

Tesla coil is a radio frequency oscillator that drives an air-core double-tuned resonant transformer to produce high voltages at low currents. so let’s get started with our mini tesla coil. Materials 1. 8 CM PVC PIPE 2. 15-20 Metres of COPPER Insulated Wire[motor winding wire], thickness around 0.2 mm 3. 15cm copper insulated wire which … Read more Easy Tesla Coil

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Powerful 12V-220V AC Inverter, 60-100watts| DC to AC

Hello, everyone the instructable here in this post is a 60watt homemade inverter. Inverters are of 2 types mainly square wave and sinewave. The design discussed here is a powerful 12V- 220V AC inverter, 60w square wave inverter. This inverter is capable of powering CFLs, tube lights, dc fan ext. it can handle up to … Read more Powerful 12V-220V AC Inverter, 60-100watts| DC to AC

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