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Technically it may seem impossible to illuminate a 3.3V LED with a 1.5V source, but the amazing concept of joule thief makes this look so easy and effective, and virtually unbelievable. Moreover the circuit additionally makes sure that not a single drop of “joule” is left unused in the cell. A joule thief circuit is … Read more3 Best Joule Thief Circuits
Want to build a simple clap switch circuit that will toggle any load in response to your claps? The article is presented exactly for this purpose. Here we discuss 4 unique and simple designs which can be selected as per user preference. Overview The article talks about what the title suggests – a clap switch. … Read more4 Tested Clap Switch Circuits
The post elaborately explains 3 Hi-End, automatic, advanced, single chip CC/CV or constant current, constant voltage 3.7V Li-Ion battery charger circuits, using specialized Hi-End IC TP4056, IC LP2951, IC LM3622, with battery temperature sensing and termination facility. Design#1 CIRCUIT DESCRIPTION The first design is probably the smartest one, incorporating the IC TP4056 which is a … Read more3 Smart Li-Ion Battery Chargers using TP4056, IC LP2951, IC LM3622
The following article presents 7 interesting modified sine wave inverter designs with exhaustive descriptions regarding its construction procedure, circuit diagram, waveform output and detailed parts lists. The designs are intended for learning and building experimental projects by engineers and students. Here we discuss different varieties of modified designs ranging from a modest 100 watt to … Read more7 Modified Sine Wave Inverter Circuits Explored – 100W to 3kVA
This robotic arm circuit which can be also implemented like a robotic crane, works using 6 servo motors and can be controlled through a microcontroller remote control, using an Arduino based 2.4 GHz communication link. Main Features When you are building something as sophisticated as a robotic arm, it must look modern and must include many … Read moreHow to Make a Wireless Robotic Arm using Arduino
In this article we will learn how to build a simple 3 watt amplifier circuit which can be powered directly from a computer 5V USB port for driving an 8 ohm 3 watt speaker. You can build a couple of such circuits and use them for creating a stereo output into a pair of 8 … Read moreUSB 5V Audio Amplifier for PC Speakers