In this post we will learn how to generate electricity from our shoe while walking. This electricity can be simultaneously used for charging a cellphone battery. In a few of […]
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PWM Solar Battery Charger Circuit
This simple, enhanced, 5V zero drop PWM solar battery charger circuit can be used in conjunction with any solar panel for charging cellphones or cell phone batteries in multiple numbers […]
How to Make a Powerful RF Signal Jammer Circuit
The post describes a simple homemade RF signal jammer circuit that can be used for jamming any RF signal within a radial range of 10 meters. The idea was requested […]
Super Capacitor Charger Theory and Working
The post explains a super capacitor charger circuit for charging super capacitors which converts a 12V car battery voltage to an elevated 16V for charging a bank of super capacitors. […]
3.7 V Class-D Speaker Amplifier Circuit for Differential Analog Input
A class D amplifier is basically a category of amplifier in which the power devices (mosfets and BJTs) are operated like switches. The associated output devices in such amplifier circuits […]
Vibrating Cell Phone Remote Control Circuit
In few of my previous articles we discussed a handful of GSM remote control circuits using ordinary cell phones as the modem. All those designs incorporated the ringtone of the […]