EDN

In Circuit Transistor Checker

This simple circuit has helped me out on many occasions. It is able to check transistors, in the circuit, down to 40 ohms across the collector-base or base-emitter junctions. It can also check the ...
Electronic Design

Test Setup Checks Transistors’ hFEs When Tight Control Is Important

This file type includes high resolution graphics and schematics. The spread of h FE values in a batch of transistors may be wide enough to cause unreliable performance during mass production of a ...
EDN

In-Circuit Tester for SCR, Diodes, and Transistors

The circuit has been constructed to provide an in-circuit system that will test the integrity of electronic components such as Silicon Controlled Rectifiers, diodes, and PNP or NPN transistors. 4093 – ...
Semiconductor Engineering

Unearthing Hidden Reliability Risks

Leakage through parasitic body diodes in MOSFETs: Unintended current paths can form through transistor body diodes, ...
Electronic Design

Simple Electronic Lock Uses Single-Transistor Circuit

A very simple but highly efficient combination lock circuit is shown in the figure. Any type of on/off switches can be used, varying from commercially available inexpensive types to more sophisticated ...
Electronics Weekly

Transistor testing costs are a ‘serious’ problem

The cost of testing a transistor will approach and may exceed the cost of manufacturing it, Professor Bashir Al-Hashimi at the University of Southampton, has warned. Al-Hashimi, who is at the ...