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goodings(at)yorku.ca
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 Posted: Tue Sep 25, 2018 11:46 am Post subject: RotaxEngines-List Digest: 2 Msgs - 09/24/18 |
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For what it's worth, two 10,000 mF (microfarad) capacitors in parallel = 20,000
mF will be almost as good as one 22,000 mF capacitor. One capacitor > 22,000 mF
will be fine, even better. But be fussy about having the working voltage (for
any electrolytic capacitor) not less than 25 V. All this capacitor is doing is
acting as a "short" to ground for radio frequency noise originating in the
ignition circuit so that the noise does not mess up your radios.
John Goodings, C-FGPJ CH601HD Zodiac
Quoting RotaxEngines-List Digest Server <rotaxengines-list(at)matronics.com>:
| Quote: | *
==================================================
Online Versions of Today's List Digest Archive
==================================================
Today's complete RotaxEngines-List Digest can also be found in either of the
two Web Links listed below. The .html file includes the Digest formatted
in HTML for viewing with a web browser and features Hyperlinked Indexes
and Message Navigation. The .txt file includes the plain ASCII version
of the RotaxEngines-List Digest and can be viewed with a generic text editor
such as Notepad or with a web browser.
HTML Version:
http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter 18-09-24&Archive=RotaxEngines
|
| Quote: |
================================================
EMail Version of Today's List Digest Archive
================================================
----------------------------------------------------------
RotaxEngines-List Digest Archive
---
Total Messages Posted Mon 09/24/18: 2
----------------------------------------------------------
Today's Message Index:
----------------------
1. 01:22 PM - Capacitors (Hugh McKay)
2. 02:11 PM - Re: Capacitors (John Hauck)
________________________________ Message 1
_____________________________________
Time: 01:22:36 PM PST US
From: Hugh McKay <hgmckay(at)bellsouth.net>
Subject: Capacitors
On the Rotax 912 UL engine wiring diagram one 22,000 UF capacitor at 25V is
shown in the circuit. If you cannot find one capacitor of the exact Capaci
tance, can one larger capacitor be used? Can two 10,000 aluminum electrolyt
ic capacitors connected in parallel at that point in the circuit accomplish
the same thing?
Hugh G. McKay III, P.E. Fellow. L.M. ASCE
Senior Consultant
Worldwide Engineering Inc.
4090 North NC Hwy. 16
Denver, NC 28037
Ph. 704-661-8271
Fax 704-483-5466
Email hgmckay(at)bellsouth.net
http://www.geo.com (click on Power Division)
Sent from Mail for Windows 10
________________________________ Message 2
_____________________________________
Time: 02:11:37 PM PST US
From: "John Hauck" <jhauck(at)elmore.rr.com>
Subject: RE: Capacitors
EBay has all kinds of 22,000 mf capacitors. Here are a few with free
shipping. Super cheap:
https://www.ebay.com/bhp/22000uf-capacitor
John Hauck
Kolb MKIII
Titus, Alabama
From: owner-rotaxengines-list-server(at)matronics.com
[mailto:owner-rotaxengines-list-server(at)matronics.com] On Behalf Of Hugh
McKay
Sent: Monday, September 24, 2018 3:22 PM
Subject: Capacitors
On the Rotax 912 UL engine wiring diagram one 22,000 UF capacitor at 25V
is shown in the circuit. If you cannot find one capacitor of the exact
Capacitance, can one larger capacitor be used? Can two 10,000 aluminum
electrolytic capacitors connected in parallel at that point in the
circuit accomplish the same thing?
Hugh G. McKay III, P.E. Fellow. L.M. ASCE
Senior Consultant
Worldwide Engineering Inc.
4090 North NC Hwy. 16
Denver, NC 28037
Ph. 704-661-8271
Fax 704-483-5466
Email hgmckay(at)bellsouth.net
http://www.geo.com (click on Power Division)
Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for
Windows 10
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kenryan
Joined: 20 Oct 2009
Posts: 426
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| Posted: Tue Sep 25, 2018 1:32 pm Post subject: RotaxEngines-List Digest: 2 Msgs - 09/24/18 |
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|
John, isn't the ignition isolated from the starting/charging circuits (which is where the capacitor is located)?
On Tue, Sep 25, 2018 at 1:51 PM <goodings(at)yorku.ca (goodings(at)yorku.ca)> wrote:
| Quote: | --> RotaxEngines-List message posted by: goodings(at)yorku.ca (goodings(at)yorku.ca)
For what it's worth, two 10,000 mF (microfarad) capacitors in parallel = 20,000
mF will be almost as good as one 22,000 mF capacitor. One capacitor > 22,000 mF
will be fine, even better. But be fussy about having the working voltage (for
any electrolytic capacitor) not less than 25 V. All this capacitor is doing is
acting as a "short" to ground for radio frequency noise originating in the
ignition circuit so that the noise does not mess up your radios.
John Goodings, C-FGPJ CH601HD Zodiac
Quoting RotaxEngines-List Digest Server <rotaxengines-list(at)matronics.com (rotaxengines-list(at)matronics.com)>:
> *
>
> =========================
> Online Versions of Today's List Digest Archive
> =========================
>
> Today's complete RotaxEngines-List Digest can also be found in either of the
> two Web Links listed below. The .html file includes the Digest formatted
> in HTML for viewing with a web browser and features Hyperlinked Indexes
> and Message Navigation. The .txt file includes the plain ASCII version
> of the RotaxEngines-List Digest and can be viewed with a generic text editor
> such as Notepad or with a web browser.
>
> HTML Version:
>
>
>
http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter=2018-09-24&Archive=RotaxEngines
>
> Text Version:
>
>
>
http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter=2018-09-24&Archive=RotaxEngines
>
>
> =======================
> EMail Version of Today's List Digest Archive
> =======================
>
>
> ----------------------------------------------------------
> RotaxEngines-List Digest Archive
> ---
> Total Messages Posted Mon 09/24/18: 2
> ----------------------------------------------------------
>
>
> Today's Message Index:
> ----------------------
>
> 1. 01:22 PM - Capacitors (Hugh McKay)
> 2. 02:11 PM - Re: Capacitors (John Hauck)
>
>
>
> ________________________________ Message 1
> _____________________________________
>
>
> Time: 01:22:36 PM PST US
> From: Hugh McKay <hgmckay(at)bellsouth.net (hgmckay(at)bellsouth.net)>
> Subject: Capacitors
>
> On the Rotax 912 UL engine wiring diagram one 22,000 UF capacitor at 25V is
> shown in the circuit. If you cannot find one capacitor of the exact Capaci
> tance, can one larger capacitor be used? Can two 10,000 aluminum electrolyt
> ic capacitors connected in parallel at that point in the circuit accomplish
> the same thing?
>
> Hugh G. McKay III, P.E. Fellow. L.M. ASCE
> Senior Consultant
> Worldwide Engineering Inc.
> 4090 North NC Hwy. 16
> Denver, NC 28037
>
> Ph. 704-661-8271
> Fax 704-483-5466
> Email hgmckay(at)bellsouth.net (hgmckay(at)bellsouth.net)
> http://www.geo.com (click on Power Division)
> Sent from Mail for Windows 10
>
>
> ________________________________ Message 2
> _____________________________________
>
>
> Time: 02:11:37 PM PST US
> From: "John Hauck" <jhauck(at)elmore.rr.com (jhauck(at)elmore.rr.com)>
> Subject: RE: Capacitors
>
> EBay has all kinds of 22,000 mf capacitors. Here are a few with free
> shipping. Super cheap:
>
>
> https://www.ebay.com/bhp/22000uf-capacitor
>
>
> John Hauck
>
> Kolb MKIII
>
> Titus, Alabama
>
>
> From: owner-rotaxengines-list-server(at)matronics.com (owner-rotaxengines-list-server(at)matronics.com)
> [mailto:owner-rotaxengines-list-server(at)matronics.com (owner-rotaxengines-list-server(at)matronics.com)] On Behalf Of Hugh
> McKay
> Sent: Monday, September 24, 2018 3:22 PM
> Subject: Capacitors
>
>
> On the Rotax 912 UL engine wiring diagram one 22,000 UF capacitor at 25V
> is shown in the circuit. If you cannot find one capacitor of the exact
> Capacitance, can one larger capacitor be used? Can two 10,000 aluminum
> electrolytic capacitors connected in parallel at that point in the
> circuit accomplish the same thing?
>
>
> Hugh G. McKay III, P.E. Fellow. L.M. ASCE
>
> Senior Consultant
>
> Worldwide Engineering Inc.
>
> 4090 North NC Hwy. 16
>
> Denver, NC 28037
>
>
> Ph. 704-661-8271
>
> Fax 704-483-5466
>
> Email hgmckay(at)bellsouth.net (hgmckay(at)bellsouth.net)
>
> http://www.geo.com (click on Power Division)
>
> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for
> Windows 10
>
>
>
>
>
>
>
>
>
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