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  #1  
Old 07-15-2014, 03:26 PM
Tom Albrecht's Avatar
Tom Albrecht Tom Albrecht is offline
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Quote:
Originally Posted by bigaudioal View Post
Great tips Tom! So it looks as though i replace each selenium with a 1N4007 diode and then to bring the B+ back down I am only replacing the existing 4.6 ohm resistor with a 20 ohm/10 watter? This 1 resistor adequately handles both diodes in this circuit?

Thx.
Yes, that's correct.

Tom
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Old 07-18-2014, 07:44 PM
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bigaudioal bigaudioal is offline
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Thanks. I ordered 1N4007 diodes from Allied. Searched for that numbered and ordered them. They arrived today and I was very surprised on how small they are. Did I order the correct ones? See below photo. That is my index finger next to one.

The label also has these specs:

1 A (max.) @25C IF; 1.1 V (MAX.) @ 25C; 5 UADC (MAX.) @ 25C I

Are these correct??

Thx.
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Old 07-18-2014, 08:18 PM
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Phil Nelson Phil Nelson is offline
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Yes, 1N4007 diodes are tiny. The light band marks the positive (+) end.

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html
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Old 07-18-2014, 08:21 PM
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bigaudioal bigaudioal is offline
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Thanks for confirming! Since I have not ordered before, wanted to make sure I got the correct part. Really appreciate it.
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