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Thread
2012-12-20 by Stephen Richards
2012-12-20 by sasami@hotkey.net.au
>Hi Ken and allgarden variety electrolytics.
>
>I'm unfamiliar with 'BP' caps , does this mean bipolar ? Can i just use 1uF
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>The CGS Modular Synth home page: http://www.cgs.synth.net/
>Yahoo! Groups Links
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2012-12-20 by Ove Ridé
> Hi Ken and allNormally, electrolytic capacitors are polarized, meaning that they can
>
> I'm unfamiliar with 'BP' caps , does this mean bipolar ? Can i just use
> 1uF garden variety electrolytics.
2012-12-20 by Stephen Richards
On 20 December 2012 12:40, Stephen Richards <okayjustalittle@...> wrote:
> Hi Ken and all
>
> I'm unfamiliar with 'BP' caps , does this mean bipolar ? Can i just use
> 1uF garden variety electrolytics.
Normally, electrolytic capacitors are polarized, meaning that they can
only be charged according to their polarity. If you charge them in
reverse, they'll conduct instead of acting like a capacitor, and will
eventually dry out, or if connected in circuits where they can conduct
large currents (for example as decoupling capacitors on the power
supply rails) explode.
I'm not very fond of the name bipolar capacitor, however, since
bipolar usually indicates that something IS polarized rather than that
it ISN'T. I much prefer the term non-polarized, or NP.
If you are hard pressed, you can emulate the function of an NP cap by
placing two polarized caps of approximately double the value in
series, "back to back", that is both the negative sides, or both the
positive sides, pointing "inward". Two 2.2 uF caps should be good
enough for this application.
Another possible solution in this case is to find a ceramic capacitor
(either a hole mount or even a surface mount one) that fits the
footprint. Capacitor manufacturing has come a long way since 1982.
just make sure the capacitors are rated 25 V tolerant or higher.
--
/Ove
Blog: <http://blog.gg8.se/>
"Here is Evergreen City. Evergreen is the color of green forever."
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2012-12-20 by Dave Kendall
On 20 Dec 2012, at 11:40, Stephen Richards wrote:
> Hi Ken and all
>
> I'm unfamiliar with 'BP' caps , does this mean bipolar ? Can i just
> use 1uF garden variety electrolytics.
>
> [Non-text portions of this message have been removed]
>
>
>
2012-12-20 by Stephen Richards
On 20 Dec 2012, at 11:40, Stephen Richards wrote:
> Hi Ken and all
>
> I'm unfamiliar with 'BP' caps , does this mean bipolar ? Can i just
> use 1uF garden variety electrolytics.
>
> [Non-text portions of this message have been removed]
>
>
>
------------------------------------
The CGS Modular Synth home page: http://www.cgs.synth.net/
Yahoo! Groups Links
[Non-text portions of this message have been removed]
2012-12-20 by Dave Kendall
> Suppose i just needed to know the BP ones were not essential in thisBipolar (BP) and non-polar (NP) are different names for the same thing,
> design.
On 20 Dec 2012, at 21:20, Stephen Richards wrote:
> Thanks Dave , i might go with those , i'm pretty sure i have some.
>
>
>
> ________________________________
> From: Dave Kendall <davekendall@...>
> To: cgs_synth@yahoogroups.com
> Sent: Friday, December 21, 2012 4:28 AM
> Subject: Re: [cgs_synth] 1 uf BP electrolytic capacitors for CGS113
>
> Hi Stephen.
>
> You can get small MKT or WIMA type 1uF poly non-polarised capacitors
> now quite cheaply. Things to check are the voltage rating (35V or
> more), and the pin spacing. The ones Rapid sell in the UK are 5mm
> pitch.
>
> cheers,
> Dave
>
> On 20 Dec 2012, at 11:40, Stephen Richards wrote:
>
> > Hi Ken and all
> >
> > I'm unfamiliar with 'BP' caps , does this mean bipolar ? Can i just
> > use 1uF garden variety electrolytics.
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
>
> ------------------------------------
>
> The CGS Modular Synth home page: http://www.cgs.synth.net/
> Yahoo! Groups Links
>
> [Non-text portions of this message have been removed]
>
>
>
2012-12-21 by Stephen Richards
> Suppose i just needed to know the BP ones were not essential in thisBipolar (BP) and non-polar (NP) are different names for the same thing,
> design.
On 20 Dec 2012, at 21:20, Stephen Richards wrote:
> Thanks Dave , i might go with those , i'm pretty sure i have some.
>
>
>
> ________________________________
> From: Dave Kendall <davekendall@...>
> To: cgs_synth@yahoogroups.com
> Sent: Friday, December 21, 2012 4:28 AM
> Subject: Re: [cgs_synth] 1 uf BP electrolytic capacitors for CGS113
>
> Hi Stephen.
>
> You can get small MKT or WIMA type 1uF poly non-polarised capacitors
> now quite cheaply. Things to check are the voltage rating (35V or
> more), and the pin spacing. The ones Rapid sell in the UK are 5mm
> pitch.
>
> cheers,
> Dave
>
> On 20 Dec 2012, at 11:40, Stephen Richards wrote:
>
> > Hi Ken and all
> >
> > I'm unfamiliar with 'BP' caps , does this mean bipolar ? Can i just
> > use 1uF garden variety electrolytics.
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
>
> ------------------------------------
>
> The CGS Modular Synth home page: http://www.cgs.synth.net/
> Yahoo! Groups Links
>
> [Non-text portions of this message have been removed]
>
>
>
------------------------------------
The CGS Modular Synth home page: http://www.cgs.synth.net/
Yahoo! Groups Links
[Non-text portions of this message have been removed]