A non-technical friend called to say that he had acquired a box of "those things that you have in your workshop" and did I want it, so I told him to bring it round. It was a huge cardboard box full of electronic components, some in ziplock bags, some loose. It has taken me all afternoon to sort them into heaps on the dining table- anything with 3 legs in one heap, ICs in another heap, caps, diodes, connectors etc. I think that it came from an electronic supplier that closed down many years ago in a town down the coast. Many of the plastic bags have flaked to bits with UV exposure, so I grabbed handfuls of loose components and sorted them roughly.
One component (among many) caught my eye. It is a STR440 in a modified TO3 case (3 legs.). I cannot find any data on this, other than it is a monolithic 107V output 0.6A regulator.
I don't recall seeing anything that needed 107V specifically.
Any ideas for its intended use?
I have seen the 3 leg TO3 case style only once before, and it was a high-voltage switching transistor by Motorola used in a vehicle ignition system.
Regards, BT