diodetesting
Diodetesting, or diode testing, is the practice of verifying the function and characteristics of diodes using electrical measurement equipment. It is commonly performed with a digital multimeter that includes a diode test function, but dedicated diode testers or curve tracers may also be used.
Most meters apply a small test current and measure the forward voltage drop when the test leads
Testing in-circuit versus out-of-circuit matters. For accuracy, it is often best to remove at least one lead
Special cases include Zener diodes and LEDs. In diode-test mode, a Zener diode will show a forward
Limitations exist: some diodes, especially in complex circuits or high-speed parts, may not test reliably with
See also: diode, silicon diode, Zener diode, LED, multimeter, diode tester.