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Audible continuity tester

Audible continuity tester
Whatever the latest trend in digttal multimeters, no electronics workshop is complete without a continuity tester for fast and reliable testing of connections, components and PCB tracks. The little Instrument discussed here is an audible continuity tester whose output frequency is determined by the resistance measured. Handheld and extremely simple to use, the tester allows you to concentrate on the connections you wish to examine rather than on a LED, a display or a moving coil meter. So. using the continuity tester is a matter of listening as you 'probe through' the circuit under investigation.
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