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Conductivity tester circuit diagrams

Fuse Monitor / Alarm
Fuse Monitor / Alarm
December 25, 2010

A simple way to see if a fuse has blown without removing it from its holder. [more]

Connection Tester
Connection Tester
November 15, 2010

A low resistance ( 0.25 - 4 ohm) continuity tester for checking soldered joints and connections. [more]

Continuity Tester Circuit Diagram
Continuity Tester Circuit Diagram
September 30, 2010

Having good contacts is important – not only in your daily life, but also in electronics. In contrast to social contacts, the reliability of electrical contacts can be checked quickly and easily. Various types of... [more]


circuit from:http://www.extremecircuits.net/2010/04/continuity-tester-circuit-diagram.html

Invisible Broken Wire Detector
Invisible Broken Wire Detector
September 27, 2010

Portable loads such as video cameras, halogen flood lights, electrical irons, hand drillers, grinders, and cutters are powered by connecting long 2- or 3-core cables to the mains plug. Due to prolonged usage, the power... [more]


circuit from:http://www.extremecircuits.net/2010/05/invisible-broken-wire-detector.html

Simple Short-Circuit Detection
Simple Short-Circuit Detection
September 27, 2010

This circuit is suitable in every situation where over-current protection is required. Here we give an example from the model train world. Every seasoned model train enthusiast knows that there is nothing worse than having... [more]


circuit from:http://www.extremecircuits.net/2010/05/simple-short-circuit-detection.html

Multi Wire Cable Tester
Multi Wire Cable Tester
June 23, 2010

A multi wire cable tester with a separate LED for each wire. Will show open circuits, short circuits, reversals, earth faults, continuity and all with four IC's. Designed initially for my intercom, but can be... [more]

Continuity Tester
Continuity Tester
June 22, 2010

Continuity Tester [more]

Beeper to find short circuits
Beeper to find short circuits
June 22, 2010

This design offers a way to trace resistance in the milliohm range, right to a short between bridged traces beneath a solder mask. [more]