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 – ...

The circuit in the diagram is a very handy tool for rapidly checking all kinds of thyristor (SCR, triac, …). In case of a triac, all four quadrants are tested, which is done with S3, while in case of ...

So it‘s a little after six in the a.m. when Jimmie Kissling and I get rolling down the still-dark rural roads for the first job of the day - getting a load of asphalt “binder” for a parking lot ...