I know what I would do. Current limited PSU, connect it up, see what it does. Use a 1 k or something to dab the base and see what happens, does it conduct, does it latch.
Or non of the above
Same for the other. If your not sure if it's a reg bring the voltage up slowly and monitor the third "connection" and see if it levels off. Just keep trying every which way about.
Or non of the above
Same for the other. If your not sure if it's a reg bring the voltage up slowly and monitor the third "connection" and see if it levels off. Just keep trying every which way about.
welcome to the wonderful world of OEM "house label" parts. you might (usually about a 50/50 chance) find a NTE or SK cross reference for it (a better chance is if you find an ECG or SK book from about 5 or 10 years after the date code on the device). there is a "shelf life" for cross referenced devices. there are many devices you can't find listings for anymore because they're obsolete for too long and are discontinued from even the cross references.
motorola did OEM parts for a lot of equipment manufacturers. usually they are a standard MOT part that has been given a "house number". MOT charges a few cents extra per device for relabeling parts like this, more if they do any selection for beta or other matching to a specification. RCA used to make oem parts too, often for their competitors in the TV market.... (think about that one for a minute...... )
motorola did OEM parts for a lot of equipment manufacturers. usually they are a standard MOT part that has been given a "house number". MOT charges a few cents extra per device for relabeling parts like this, more if they do any selection for beta or other matching to a specification. RCA used to make oem parts too, often for their competitors in the TV market.... (think about that one for a minute...... )
by some (but few) amplifier brands cross reference lists were published in their service manuals, where the appropriate "2N" was to read behind the house label respectively fabric number (e. g. Altec or McIntosh).
Check out this threads:
http://www.diyaudio.com/forums/soli...id-state-audio-amplifier-components-want.html
http://www.diyaudio.com/forums/soli...-models-quasi-complementary-power-output.html
http://www.diyaudio.com/forums/soli...irst-complementary-ab-bipolar-amplifiers.html
this situation is still so in most cases. About the thread
http://www.diyaudio.com/forums/parts/167680-vintage-transistors.html
you will find some cover pictures of vintage data books. With help of the exactly title you can go in vintage book shops or special library in your aera for order or to borrow for copy.
I want to find such data books (or at least a cover photo) about vintage Transistors from Delco Radio (Delco GM).
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