Continuity Tester Details and Uses
– Tester consists of an indicator in series with a source of electrical power, usually a battery, and two test leads.
– Indicator is activated when a complete circuit is established between the test leads.
– Indicator can be an electric light or a buzzer.
– Some models of multimeters have built-in audible continuity buzzers or beepers.
– Low voltage, low current devices are used for continuity testing in high resistance circuits or with delicate conductors and sensitive components.
– Op-amp and watch batteries are commonly used in these testers.
– Exquisitely sensitive testers can indicate if test points are taken by both hands.
– Tester can be combined with a standard flashlight for convenience.
– Quick conversion between tester and flashlight applications is possible with a phone connector or jack plug.
Latching Continuity Testers
– Simple continuity test may not reveal certain problems, such as vibration-induced issues in automobile wiring.
– Latching continuity testers are used in these cases.
– They can detect intermittent opens and shorts, as well as steady-state conditions.
– These devices contain a fast-acting electronic switch, often a Schmitt trigger.
– Gated astable oscillator in the device detects and locks (latches) the indicator on an intermittent condition.
Related Concepts
– Cable tester is a related concept.
– Continuity test is another related concept.
– LED circuit is relevant to continuity testing.
– Solenoid voltmeter is also related to this field.
– Test light is a commonly used tool for continuity testing.
References and External Links
– Cable Continuity Tester Info Source (archived from the original on March 23, 2012)
– Dean, Tamara (2010). Network+ Guide to Networks. Delmar. pp.660–661.
– The Multimeter Guide (retrieved on July 5, 2016)
– Dean, Tamara (2010). Network+ Guide to Networks. Delmar. pp.661–662.
– Continuity Test Resistance Calculator (retrieved from https://en.wikipedia.org/w/index.php?title=Continuity_tester&oldid=996791750) Source: https://en.wikipedia.org/wiki/Continuity_tester
A continuity tester is an item of electrical test equipment used to determine if an electrical path can be established between two points; that is if an electrical circuit can be made. The circuit under test is completely de-energized prior to connecting the apparatus.
