So, if you’re looking for the the simplest and cheapest shortwave transmitter circuit, it’s here. This transmitter is very low power and very stable as well, uses a readily available […]
How to accurately measure low resistance with cheap Multimeter
We often need some low value resistors, less than 1 Ohm. Mostly as current sensing resistors in power electronics projects. You can’t measure less then 1 Ohm with cheap multimeters. […]
LM317 constant current source circuit design
A constant current source source can supply a fixed current to a load regardless of input voltage or load change. LM317 constant current source is one of the simplest design. […]
What is dielectric resonator oscillator and it’s application
A dielectric resonator oscillator is basically a high frequency oscillator, operates within a range of few tens of gigahertz. The main frequency determining component is piece of dielectric material, usually […]
HH004F LED driver circuit
HH004F is a low power integrated boost converter IC in a TO-92 package, look exactly like a small transistor. Though it’s quite a uncommon and undocumented IC, but you may […]
Free PCB design software – Ultimate list of 2018
There’s no short of free PCB design software to get your very own PCB ready. But which one should you choose ? Each of them have a fairly time consuming […]
FM transmitter circuit using C9018 transistor
FM transmitter circuit is a quite fun project for electronics beginners, so here’s a circuit with the C9018 transistor. In a previous post I’ve wrote about a stable and simple […]
Stable miniature FM transmitter circuit
FM transmitter circuit projects are indeed quite popular among electronics hobbyists/students. But the frustrating part is most transmitters refuses to work at all, and secondly the internet is full of crappy […]
Mobile charger circuit diagram, 100-220V AC
The market is flooded with cheap mobile charger circuit. Some of you may be looking for this type of charger circuit diagram and components list. These mobile chargers uses only […]
TDA2003 amplifier circuit diagram 10 watt
TDA2003 is a robust automotive grade audio amplifier IC. It supports up to 28 volts of operating voltage and can withstand input voltage fluctuation of 40 volts. A TDA2003 amplifier […]