This circuit employs a synchronous demodulator to separate a 1 KHz signal from noise and measures...
This circuit protects expensive portable equipment against all types of improper hookups and...
There are still neighbors that keep annoying you by having loud the TV or the radio? Well I have...
Studying current measurement is a prerequisite for many of the measuring techniques. The current...
Magnetic switch is a circuit which can respond to magnetic fields that were around the sensor....
If you build fused-filament-fabrication parts (the technology that RepRap uses) at room...
Some 20 years ago it was common to see small key-holders emitting an intermittent beep for a...
The heart of the circuit is an IC4822 named as IC1. IC4822 is a programmed ROM, which generates...
The AVR 8-Bit RISC microcontroller from Atmel is a very common microcontroller. This...
The red connector is for an optional external antenna wire and the black connector is for a...