rtirion,
I know where a couple of them are and that's all I know. I don't even know what the price is. Next time I'm in that area I'll stop in and check them out. I do know they don't have any 575s to go with the 175s so they may not even know what they are.
Craig
I know where a couple of them are and that's all I know. I don't even know what the price is. Next time I'm in that area I'll stop in and check them out. I do know they don't have any 575s to go with the 175s so they may not even know what they are.
Craig
If you decide to check them out, I would be very happy with a price quote
and details.
I will be patient.🙂
and details.
I will be patient.🙂
The 175s aren't going anywhere soon as they've been there for years, I'm thinking nobody knows what they are. You have to have a 575 to use them and how many people still have 575s? I'll let you know, I need to go there anyway for other stuff.
Craig
Craig
There is a nice irony in using a 36 tube unit to measure transistors. I have an old Heathkit IT-1121 curve tracer which has paid for itself over the years in the occasional 'tough dog'. The Heath tracer is limited to 40 watts drive, 40V @1A or 200V @ 200mA but it's sufficient to prove the point.
G²
The TEK 575 is a wonderful unit. First used one professionally in 1966. Owned one in the 70's-90's. Finally, the master transformer failed. Still, it is a wonderful unit, but not necessarily for super matching. Actually DC meters do that better, BUT voltage breakdown, matching mosfets, and general characteristics of devices, are great in this unit. Try a tunnel diode, sometime.
Progress on the 576
I've been building some adapters for my 576 -- here's the TO-3 -- I use a Amphenol mini-banana plug for the collector connection which fits snugly into the Keystone socket and makes good contact with the DUT:
...and it's insulated too!
I've been building some adapters for my 576 -- here's the TO-3 -- I use a Amphenol mini-banana plug for the collector connection which fits snugly into the Keystone socket and makes good contact with the DUT:
An externally hosted image should be here but it was not working when we last tested it.
...and it's insulated too!
OK -- this one should do TO-3's, TO-247, TO-265 and TO-220:
An externally hosted image should be here but it was not working when we last tested it.
Wow, I really should get me one. It matches great with my Tektronix scope from the early '60s.. Or was it mid '50s?
It's a RM-15, which is the same as the 545 (if I recall correctly). Those things are beautiful inside. A delay line of 30 cm long, probably all handmade. If I sold my house I might be able to afford one of those babys when they were new.
It's a RM-15, which is the same as the 545 (if I recall correctly). Those things are beautiful inside. A delay line of 30 cm long, probably all handmade. If I sold my house I might be able to afford one of those babys when they were new.
You can buy a new curve tracer made in China.. all ss and compact crt display; Brand is SMT MAX; model CA4810A. Got one new off the internet. But, it did cost more than 10-20 dollars.
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