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Post subject: "Buffer" caps
Posted: Mon Jul 08, 2013 1:43 am
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Bought a bunch of NOS non-polar caps. Any idea of the usefulness of BUFFER caps?

Thanks!

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Post subject: Re: "Buffer" caps
Posted: Mon Jul 08, 2013 8:34 am
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The DC voltage specs seem awfully high for anything Fender-related, either amp or guitar......

Arjay

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Post subject: Re: "Buffer" caps
Posted: Mon Jul 08, 2013 8:39 am
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I remember seeing them in old tube radios in my high school electronics shop and remember something about preventing contact arching so I tried looking them up and found this.
I'm surprised I remember anything about high school in 1972 :lol:
Hopes this helps a little. Bill and Arjay would probably know for sure. Us Geezer guys do have a burst of memory once in a while. :mrgreen:

"Buffers make use of the energy-absorption characteristic of a capacitor to prevent contact arching. They are installed in parallel with contacts to prevent damage to the contact material."

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Post subject: Re: "Buffer" caps
Posted: Mon Jul 08, 2013 8:58 am
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In that case they might be useful installed across the contacts of a standby switch to prevent the ubiquitous popping noise that sometimes occurs when switching the amp in and out of the "operate" mode.

Arjay

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Post subject: Re: "Buffer" caps
Posted: Mon Jul 08, 2013 1:14 pm
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Arjay, could they be used on rotary switches too? For some reason this is starting to ring a bell.

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Post subject: Re: "Buffer" caps
Posted: Mon Jul 08, 2013 2:08 pm
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I don't think I'd be able to predict that with any certainty.

Arjay

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Post subject: Re: "Buffer" caps
Posted: Mon Jul 08, 2013 2:12 pm
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Buffer capacitor;

www.justradios.com/buffer.html


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Post subject: Re: "Buffer" caps
Posted: Mon Jul 08, 2013 4:20 pm
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63supro wrote:
I remember seeing them in old tube radios in my high school electronics shop and remember something about preventing contact arching so I tried looking them up and found this.
I'm surprised I remember anything about high school in 1972 :lol:
Hopes this helps a little. Bill and Arjay would probably know for sure. Us Geezer guys do have a burst of memory once in a while. :mrgreen:

"Buffers make use of the energy-absorption characteristic of a capacitor to prevent contact arching. They are installed in parallel with contacts to prevent damage to the contact material."


1972? Wow that was the year I started playing guitar...I was 10! As for remembering things from High School...I had to take a DANTES test once about 25 years ago...some how the college I was attending demanded that I hadn't taken the course (I had)...so since it was free (thank you USAF) I took the two part test, damned if I didn't pass both of them! I remember sitting there looking at the equations and all I could remember from Mr. Benny Goodman's (yeah what a name and a real a-hole) algebra class was to simplify everything first! I kind of hated that it worked in a way, but I took the 6 credit hours anyway and used 3 of the credits as an elective! So it seems that crap is up there in my filing cabinet of a brain, the hard part is finding which drawer that stuff is in!

And now back to the buffering caps...

T2

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Post subject: Re: "Buffer" caps
Posted: Mon Jul 08, 2013 4:39 pm
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Thanks, guys! from another site:

" Buffer caps were used back in the day when car radios had vibrator power supplys for B+. They were relatively low value caps with a high voltage rating and were used to cut the hash generated by the mechanical vibrator points. "

Vibrator PS are not marital aids :lol: But device to rectify VDC to VAC, if I gather this correctly. The seller was an old time TV repairman, so most of his stuff is 1600VDC+ rated. Will try out those OD's. Tell you what I think.

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Post subject: Re: "Buffer" caps
Posted: Mon Jul 08, 2013 5:56 pm
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BMW2002Ti wrote:
The seller was an old time TV repairman, so most of his stuff is 1600VDC+ rated.


Those types of caps were pretty common in the horizontal drive and flyback circuits of the old vacuum-tube TV's common in the 1960's.

Arjay

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Post subject: Re: "Buffer" caps
Posted: Tue Jul 09, 2013 1:50 am
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Wonder how those buffer caps sound in the signal path?


:?: :?: :?:


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Post subject: Re: "Buffer" caps
Posted: Tue Jul 09, 2013 2:47 am
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BMW2002Ti wrote:
Wonder how those buffer caps sound in the signal path?


:?: :?: :?:



IMO they will sound good . Buffer caps its only high voltage ? Mean most expensive than regular 350 volts caps ?


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Post subject: Re: "Buffer" caps
Posted: Tue Jul 09, 2013 7:52 pm
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T2Stratman wrote:
63supro wrote:
I remember seeing them in old tube radios in my high school electronics shop and remember something about preventing contact arching so I tried looking them up and found this.
I'm surprised I remember anything about high school in 1972 :lol:
Hopes this helps a little. Bill and Arjay would probably know for sure. Us Geezer guys do have a burst of memory once in a while. :mrgreen:

"Buffers make use of the energy-absorption characteristic of a capacitor to prevent contact arching. They are installed in parallel with contacts to prevent damage to the contact material."


1972? Wow that was the year I started playing guitar...I was 10! As for remembering things from High School...I had to take a DANTES test once about 25 years ago...some how the college I was attending demanded that I hadn't taken the course (I had)...so since it was free (thank you USAF) I took the two part test, damned if I didn't pass both of them! I remember sitting there looking at the equations and all I could remember from Mr. Benny Goodman's (yeah what a name and a real a-hole) algebra class was to simplify everything first! I kind of hated that it worked in a way, but I took the 6 credit hours anyway and used 3 of the credits as an elective! So it seems that crap is up there in my filing cabinet of a brain, the hard part is finding which drawer that stuff is in!

And now back to the buffering caps...

T2


That's pretty cool. I started playing guitar in 1966. I went to photography school in 1995 and went back to college in 2005 for a fine art degree. Graduated Suma $@! Laude with a 3.96 GPA at the age of 52. It was rough being out of school for decades and then going back. Now, I'm an artistic dumbass who can play guitar and make photographs. :lol:

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Post subject: Re: "Buffer" caps
Posted: Tue Jul 09, 2013 8:17 pm
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Stone-Soul-Cool, Bro!!!! Art

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Post subject: Re: "Buffer" caps
Posted: Tue Jul 09, 2013 10:22 pm
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aclempoppi wrote:
Stone-Soul-Cool, Bro!!!! Art


+1

And what superb photographs they are!

8)

Arjay

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