Equivalent Series Resistance Meter (ESR Meter)

Project Description This project was conceived as a way to enhance the collection of test equipment on my test bench. I buy a lot of o...

AC Current Monitor

AC Current Monitor Senses high current-flow into power cables No wire-cutting, three versions available Circuit diagram: Parts: R1,R2...

Simple Capacitance Meter

Simple Capacitance Meter Operates in conjunction with a voltmeter 1pF to 22µF in six Ranges - 9V Battery supply Parts: P1_____________4...

Fox and Hound cable tracer

The "Fox" and "Hound," made by Triplett Corporation (http://www.triplett.com), are a transmitter and receiver for traci...

Fox - Hound, Cable Tracers

Fox - Hound, Cable Tracers, Signal Tracers, Line Tracers - whatever you want to call them   This is the device that allows you to trace wire...

Cable Tracer

The transmitter is built on a small length of PC board, cut into lands with a file. The photo clearly shows how all the components are moun...

Square wave oscillator as wire tracer

The tracer works by placing a square-wave signal on the line to be traced, The square wave is full of harmonics. small radio placed close ...

CPU Power Supply tester

Cara test PS CPU tanpa terhubung Mainboard: Sambungkan kabel warna hijau dengan kabel warna hitam /Ground ,.jika fan power supply(PS) jala...

Invisible Broken Wire Detector

Portable loads such as video cameras, halogen flood lights, electrical irons, hand drillers, grinders, and cutters are powered by connecti...

Non-Contact Power Monitor

Here is a simple non-contact AC power monitor for home appliances and laboratory equipment that should remain continuously switched-on. A ...

Circuit Board Tester

  Comments: This little circuit indicates the basic integrity of a printed board, detecting 0V, positive supply voltage from less than 3V t...

E-B-C Transistor Pin Identifier

  Circuit operation: A three-phase wave form is derived from the 350Hz ring-of-three oscillator formed by IC1A, IC1B and IC1C, and applied ...

LAN Tester circuit diagram

This LAN tester circuit originally designed by Vassilis Stergiopoulos. This LAN tester circuit optionally has two designs. The first design...

Wire Tracer

Wire Tracer (Transmitter) The circuit depicted here forms one half of a device that will prove extremely...

Simple Crystal Tester

Transistor Q1, a 2N3563, and its associated components form an oscillator circuit that will oscillate if, and only ...

Infra-Red Remote Control Tester

This little circuit is invaluable for quick go/no-go testing of just about any remote control transmitting infra-red (IR) light. The test...

Contactless AC Mains Voltage Detector

This is a CMOS IC (CD4033) based circuit which can be used to detect presence of AC mains voltage without any electrical contact with the ...

Sensitive Field Strength Meter

Description: This Field Strength Meter is simple and also quite sensitive. It uses an ordinary digital voltmeter to measure RF signal stre...

Magnetic field meter

These days when electronic circuits can be found almost anywhere, there is, some people fear*, a different kind of environmental pollution. ...