Baroque Bloke
| AFAIK, that isn’t standard notation. Maybe Q5 is a power transistor whereas Q1 is a small signal transistor.
Serious about crackers |
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Cold Ass Honkey
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| | | Posts: 2182 | Location: OR-ee-GUN | Registered: December 18, 2005 | 
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W07VH5
| quote: Originally posted by Pipe Smoker:
AFAIK, that isn’t standard notation. Maybe Q5 is a power transistor whereas Q1 is a small signal transistor.
That seems plausible. I'll have to check the rest of the circuit to see if that's the case. |
| | | Posts: 45812 | Location: Pennsyltucky | Registered: December 05, 2001 |
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Ignored facts
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| can you share the rest of the circuit? that could give some hints. maybe an IGBJT? Just guessing.
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| | | Posts: 11319 | Location: 45 miles from the Pacific Ocean | Registered: February 28, 2003 |
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W07VH5
| quote: Originally posted by radioman:
can you share the rest of the circuit? that could give some hints.
maybe and IGBJT? Just guessimg.
It's the schematic for what's inside an LMx08: http://www.mit.edu/~6.301/LM108.pdf |
| | | Posts: 45812 | Location: Pennsyltucky | Registered: December 05, 2001 |
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Baroque Bloke
| When I first looked at this schematic (half way down the page), it appeared that all NPNs had the rectangular base, and all PNPs had the thin base. But then I noticed Q1, Q2, and Q4. Dang, that theory is shot. http://www.righto.com/2016/12/...p-superbeta.html?m=1But if Q13 is a power transistor, then Q14 ought to be a power transistor too, so just don’t know…
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| | | Posts: 13557 | Location: Bottom of Lake Washington | Registered: March 06, 2007 |
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| | | Posts: 11319 | Location: 45 miles from the Pacific Ocean | Registered: February 28, 2003 |
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| Dang Radioman, You are good buddy. That answer is a real Elmer for sure. Thanks. W5SCM
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| | | Posts: 1143 | Location: Little Rock, AR | Registered: January 22, 2003 |
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