Depending on the manufacturer, the lead arrangement had another
more practical purpose, it made capacitor orientation irrelevant.
The outer leads were welded to the aluminum can, and were by
convention the negative leads. The inner lead was positive.
It is virtually always the case with radial leaded aluminum
electrolytic capacitors that the outer most lead(s) will be the
negative lead, and the most central lead(s) the positive.
There were some tantalum caps in a similar package that were all
doubles, as I recall.
-Chuck Harris
On Tue, 23 Nov 2021 20:03:55 -0800 "Gene Silvernail"
<genesilvernail@...> wrote:
Thanks Kuba,
Yeh coming from the era of tubes I had assumed a dual cap¡so much for
assuming.
Now that¡¯s starting to make sense with the single component
designator, but leaves the question which 2 out of the 3 leads make
up the capacitor and what purpose does the third lead serve. Is it a
non-electrical, mechanical only?
I¡¯m working without a schematic even though I bought the CLIP from
Artek which is minus the PS board.
Pre-Thanks
Gene/K7QHO
From: [email protected]
<[email protected]> On Behalf Of Kuba Ober
Sent: Tuesday, November 23, 2021 7:26 PM To:
[email protected] Subject: Re:
[HP-Agilent-Keysight-equipment] I'm old 70+, the 70K system is old;
good or bad omen?
My assumption would be that the number of legs has not much to do
with anything: it¡¯s a single capacitor each with 3 or 4 legs. Very
common in that era. I¡¯ e got lots of contemporaneous Tektronix
equipment that has the same capacitor styles.
The double and triple electrolytics were a thing in the vacuum tube
era.
Cheers, Kuba
23 nov. 2021 kl. 9:54 em skrev Gene Silvernail
<genesilvernail@... <mailto:genesilvernail@...> >:
?
Thanks Paul,
Just got the component location PDF on the site which provides me the
PS cap numbers; also ordered the 70900A CLIP. However, looking at
them I¡¯m confused further with the 3 leads. Only 1 component number
associated with a dual capacitor¡huh? Hopefully the schematic will
clarify this.
Regards
Gene
From: [email protected]
<mailto:[email protected]>
<[email protected]
<mailto:[email protected]> > On Behalf Of Paul
Bicknell Sent: Tuesday, November 23, 2021 12:56 PM To:
[email protected]
<mailto:[email protected]> Subject: Re:
[HP-Agilent-Keysight-equipment] I'm old 70+, the 70K system is old;
good or bad omen?
Hi Gene
sorry made a mistake the 3 legged caps are on the Vishay N -cap and
can be found on the hp 70000 groups site. Regards Paul
