Capacitors Tutorial

The multiplication operation that is required to generate a signal of a frequency equal to the...

Physicians and repair engineers often use small light pens for visual examination Spurposes....

This began as a simple project to build a cheap phono stage for a very old turntable with a cheap...

Capacitive sensors are found in a wide range of equipment, from consumer electronics to...

The schematic shown here is a circuit of a 555 tracking transmitter. 555 is a famous versatile IC...

This is a very useful RF attenuator circuit which works from 300KHz to the 3GHz range based on...

A circuit to extract and measure the modulated carrier of an Infra Red remote control. Note that...

A photodiode, SFH2030 as an infra red sensor. A MOSFET opamp, CA3140 is used in the differential...

The LM1875 amplifier delivers 20 watts into a 4 © or 8 © load on ±25V supplies. Using an 8 © load...

Have a water tank you want to measure or a dam or a gate Want to detect a car coming down the...

This is a nice LFO for all of your modulation needs. The frequency can be voltage controlled to...

Mullard TCA240 dual balanced modulator-demodulator provides suppression of carrier frequency at...