At http://www.cerwinvega.com/cerwin-vega-history.html it states:
"It was in 1957 that Vega introduced the world’s first solid state amplifier, rated at 125 RMS: it was a power house by the standards of its time. The amplifier’s circuit was influenced by a 10,000-watt sonar amp Gene designed for Bendix Corp. "
Any evidence to the contrary? Nothing against Cerwin, I just assumed it would have been someone else...
"It was in 1957 that Vega introduced the world’s first solid state amplifier, rated at 125 RMS: it was a power house by the standards of its time. The amplifier’s circuit was influenced by a 10,000-watt sonar amp Gene designed for Bendix Corp. "
Any evidence to the contrary? Nothing against Cerwin, I just assumed it would have been someone else...
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I am also looking for more information about this
have a look also to post #10 about
http://www.diyaudio.com/forums/soli...io-amplifier-components-want.html#post2173201
have a look also to post #10 about
http://www.diyaudio.com/forums/soli...io-amplifier-components-want.html#post2173201
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I believe mr. Bardeen & co. connected their 'thing' to the speaker to check whether they invented something useful.
Technically this was an amplifier.
Technically this was an amplifier.
Would be interesting to know how they built 125 (whatever) RMS with the transistors available at the time. The 2N3055 was still a few years in the future in 1957...
There were germanium power types in full production before silicon. Problematic sure, but they were in car radios, home audio en mass from the mid 1950s.
Dick Burwen
This fellow here was part of that navy sonar amplifier project as well. This guy claims to have designed and having a 160w solid state amp built by Lafayette guys in their basement in 61.
This fellow here was part of that navy sonar amplifier project as well. This guy claims to have designed and having a 160w solid state amp built by Lafayette guys in their basement in 61.
...and in a famous guitar amp - go to post #49 and #50 about
http://www.diyaudio.com/forums/soli...-state-audio-amplifier-components-want-5.html
Ha ha, yes!
But as OP, I disqualify them because they did not call it "solid state"😛
1962 Typical Car Amplifier
This app note is from 1962, about a typical class A car radio amplifier. Not exactly what you guys are looking for, but if it was typical in 1962, maybe it was brand spanking new in 1957?
http://updatemydynaco.com/HistoricDocuments/DelcoCarRadioAmp1962.pdf
This app note is from 1962, about a typical class A car radio amplifier. Not exactly what you guys are looking for, but if it was typical in 1962, maybe it was brand spanking new in 1957?
http://updatemydynaco.com/HistoricDocuments/DelcoCarRadioAmp1962.pdf
some more interesting early history
H.C. Lin, inventor of the quasi comp amp in 1952
Oral History Lin Page7 RCA GermaniumTransistors Audio
Here is an audio recording of him speaking about the invention of the quasi comp amp:
http://www.semiconductormuseum.com/Transistors/RCA/OralHistories/Lin/Lin_AudioClip2.mp3
H.C. Lin, inventor of the quasi comp amp in 1952
Oral History Lin Page7 RCA GermaniumTransistors Audio
Here is an audio recording of him speaking about the invention of the quasi comp amp:
http://www.semiconductormuseum.com/Transistors/RCA/OralHistories/Lin/Lin_AudioClip2.mp3
Actually, the Electronics review article from Lin is dated September 1956, and Lin's patent for the "Quasi" configuration is from 1955.
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