Jim Thompson wrote:
On Tue, 08 Aug 2006 21:19:21 GMT, "ian field"
wrote:


"Jim Thompson" wrote in
message ...

On Tue, 8 Aug 2006 13:44:27 -0700, "RST Engineering \(jw\)"
wrote:


What primitive semiconductors did you use in the output stage, or was it a
toob device? Did we have 2N3055s in '75? I don't memember.

Jim


[snip]

I'm trying to remember what semiconductors I used. But, IIRC,
2N3055's *were* available around that time.

...Jim Thompson
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Was it Ge or Si ?



It was Silicon. I didn't use any Germanium power devices since I
boosted my car radio back when I was a junior in high school.

...Jim Thompson

Correction: it _is_ silicon.
http://www.onsemi.com/pub/Collateral/2N3055-D.PDF.

Digi-Key has them for $2.10 a pop, in the TO-3 case, no less.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

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