“Test transistors, diodes, thyristors, resistors, capacitors and inductors. Also identify their leads and obtain their component value.
When starting my journey into the world of electronics, I obtained a lot of parts by disassembling discarded electronic devices to salvage the individual components. One of the issues I had was identifying what some of the components were and whether they were any good. Even now, I still find it worthwhile to confirm the identity of the leads on transistors even on brand new ones.
There are many builds of component testers around and this is just one more of them. The software I used identifies most of the standard components; Resistors, Capacitors, Inductors, Diodes (and double diodes), Transistors, J-FETs, MOS-FETs, SCRs or Thyristors, Triacs. It failed to recognize Diacs, UJT’s (interpreted as a double-diode) and Zener diodes (interpreted as a normal diode).”