Oscilloscopes and Measurements Tutorial

This circuit gives out an alarm when its sensor is wetted by water. A 555 astable multivibrator...

This circuit uses Analog Devices` AD639 universal trigonometric function generator to convert a...

The objective of this project was to design a small portable mixer supplied by a 9V PP3 battery,...

Modulation is the process of changing some characteristics (e. g. amplitude, frequency or phase)...

Millimeter-wave frequency bands are attractive for their wide available bandwidths. There are a...

The block diagram below shows how the removable memory card or MMC card connection to other...

Using live or neutral wire in AC household wiring as receiving antenna. Of course, this is...

This module is a "tribute" module, based on the awesome Steiner-Parker Synth VCF. Those who know...

It is illegal in most countries to operate radio transmitters without a license so take care with...

The ADRF6702 TxMod is an IQ Modulator with integrated PLL and VCO The PLL Synthesizer uses a...

This simple tone control can be used in may audio applications. It can be added to amplifers,...

build an interface board to connect some scientific equipment (for me, a pair of photovoltaic...

Here is the full schematic for the driver. I chose to use a PIC16F628 as the microcontroller...

Metal enclosure, forget the plastic case they sell, it`s nearly useless. ( I made a box from...

A combination of common-source grounded base amplifier formed by cascaded amplifier The source is...

Door alarm here with a time recognition, the owner opened the door is normally open the door,...