Continuity And Component Tester

This continuity tester gives a beep sound if detect an electric current conduction between its probes. Here is the schematic diagram of this audible cable/component tester:

Continuity And Component Tester circuit schematic diagram

Audible indication gives the benefit of “free eyes” compared to LED or other visual indication. Your eyes will normally have to keep watching on what is being tested,  no more eyes for watching any instrument’s indicator, and this sonic indication will save your life!

This entry was posted in Test and Measurement and tagged . Bookmark the permalink.,
Possibly Related to "Continuity And Component Tester" Circuits

  • Crystal Tester
    Quartz crystal tester is needed if you want to know whether the crystal is good or bad (broken).  This crystal tester gives LED light indicator. If the crystal under test is good, the LED indicator will light, and stay off … Continue reading →...
  • Simple IR Remote Tester
    Most cases of infra-red remote control failure can be detected by detecting the absence of the pulsed transmitted infra red light. It’s very rare that the remote control fail while it is still capable of transmitting the infrared pulse.  This … Continue reading →...
  • Audible Transistor Tester
    All types of transistors including Darlington and power will be tested in this project. Connect the 9v battery around the other way at points A and B to test PNP types. The transformer in the photo is a 10mH choke … Continue reading →...
  • Good/Bad Transistor Tester
    Good/Bad transistor tester means that this instrument can only determine if the transistor is good or bad, nothing more. Any transistor with gain equal to 30 or more will be considered as good by this tester, and otherwise will be … Continue reading →...
  • Transistor Tester
    We can use this basically a high gain amplifier with feedback circuit to cause the LED flash at rate determined by the 10u and 330k resistor. Before insert the unknown transistor, remove one of the transistor. The LED flash when … Continue reading →...

Comments are closed.