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Old 6th April 2011, 07:15 PM   #51
latala is offline latala  United Kingdom
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Bryan were made from about 1964 to about 1972 and were of the same quality as leak ,Rogers etc very high quality domestic amplifiers
Manufactured in Hale Manchester here in the UK
2 main models were produced the 900 and the 9000 as well as a few others
They started out as Germanium amplifiers but ended with our old friend the Silicon 2n3055 as the output devices
They are a varient of the Toby Dinsdale amplifier but with lots of detail variation !
I have posted on the UK Vintage Radio Discussion Forums forum if you use the search function with bryan you will find further information as well as pictures
you will see also a picture of the strange output transistors and I look forward to your comments
regards Trev
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Old 6th April 2011, 08:13 PM   #52
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Just one:

Click the image to open in full size.

Click the image to open in full size.

Regards zeoN_Rider
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Old 9th April 2011, 09:30 PM   #53
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Quote:
Originally Posted by latala View Post
Bryan were made from about 1964 to about 1972 and were of the same quality as leak ,Rogers etc very high quality domestic amplifiers
Manufactured in Hale Manchester here in the UK
2 main models were produced the 900 and the 9000 as well as a few others
They started out as Germanium amplifiers but ended with our old friend the Silicon 2n3055 as the output devices
They are a varient of the Toby Dinsdale amplifier but with lots of detail variation !
I have posted on the UK Vintage Radio Discussion Forums forum if you use the search function with bryan you will find further information as well as pictures
you will see also a picture of the strange output transistors and I look forward to your comments
regards Trev
thanks for this advice. URL don't goes open. here the right URL:
Bryan Amplifier - UK Vintage Radio Repair and Restoration Discussion Forum
can you post the pics from post #4 also here on this forum?
Quote:
Originally Posted by zeonrider View Post
Just one:
Regards zeoN_Rider
can you post this pictures about the follow topic ?? - thank you
Oversized TO-3 TO3 like Yamaha 2SK77 and NEC 2D363 - Overview
BTW - brand logo on the oversized power device is from this company:
http://www.shindengen.co.jp/top_e/index.html
data sheet you will find there:
http://www.datasheetarchive.com/pdf-...ok205-153.html

Last edited by tiefbassuebertr; 9th April 2011 at 09:40 PM.
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Old 10th April 2011, 11:58 PM   #54
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Default Delco 458-055

Any idea where to get a data-sheet or specs for this fellow ?
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File Type: jpg Delco_458-055.jpg (19.9 KB, 295 views)
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Old 13th April 2011, 09:42 AM   #55
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Quote:
Originally Posted by payloadde View Post
Any idea where to get a data-sheet or specs for this fellow ?
about post #26 I ask the same concerning Bendix transistors. About post #28 and #29 there are more photos from Delco power devices. If we have at least exact title of the data book respective appropriate folders, the name of publisher so as the date of first release, we can go to the interlibrary loan service of the local library for order copies.
This informations here are absolutely necessary.
Cover pics of this data books and datasheets are very helpful in this case.
Older employees in the concerned department of GM in Detroit have here perhaps a chance to find anything.

Last edited by tiefbassuebertr; 13th April 2011 at 09:45 AM.
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Old 4th June 2011, 12:26 PM   #56
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Here is the cover of the 1981 RCA Power Devices book that I have ,The number on the bottom of the binding is SSD-220C.
As I had stated in the other thread I have the 1967 RCA Transistor manual but but the cover is missing however I did find the other half of the book but there are a few pages missing.
hopfully I wil be able to find those too one day.

jer
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Old 11th October 2011, 11:45 AM   #57
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Quote:
Originally Posted by tiefbassuebertr View Post
Clarion's CA-202, the first Solid State Stereo Set for car audio hifi from 1963 (developement) and 1964 (first release)
http://www.clarion.ee/clarionprofile-e2.pdf (timeline last page)
Clarion Japan | History
More informations wanted (schematic, used transistors and photos from inside).
no informations?
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Old 7th December 2011, 09:20 PM   #58
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Default Pics of Vintage RCA Databooks about Semiconductors-III

supplement to post #33 and #34:
in the attachment more so called "hard to find" databooks from RCA.

BTW - I am looking for the first advertisements concerning RCA's 2N3055, first launched between 1961 and 1964 - go also to
2N3055 inside - commercial famous amplifier models, quasi complementary power output

Last edited by tiefbassuebertr; 7th December 2011 at 09:24 PM.
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Old 22nd December 2011, 01:14 AM   #59
GopherT is offline GopherT  United States
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Nice, new Motorola 2N176 - with Mexico marking near bottom flange on left transistor. 7339 code claims to be week 39 of 1973 production year (from current ebay listing)
Click the image to open in full size.
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Old 28th September 2012, 11:23 AM   #60
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I have recently found 5 x NEC 2sb248 transistors, new unused, but i cant find any datasheet about them.

Do you have any idea if they worth the trouble to build an amp with them?
Can you point me any suitable circuit?

Thanks in advance
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