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Re: gEDA-user: Alarm clocks and switching regulators

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Subject: Re: gEDA-user: Alarm clocks and switching regulators
From: DJ Delorie <dj@xxxxxxxxxxx>
Date: Mon, 24 Sep 2007 19:10:53 -0400
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In-reply-to: <20070924225330.GE26407@xxxxxxxxxxxxxxxxxxxxxxxxx> (message from Randall Nortman on Mon, 24 Sep 2007 18:53:30 -0400)
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> My bulk capacitors are Al electrolytics.  Speaking of board real
> estate -- yikes!  But how else am I going to get ~700uF of capacitance
> to deal with the 120Hz ripple?  (Without spending $30 each on
> high-tech capacitors, that is.)

Panasonic FC series caps.  680uF 63v is available in 12.5mm diameter
(35 mm tall!)  size.  Rated to 105C, they're only $1.35 at Digikey.

I've got four of their 820uF/63v caps on my furnace board.  It's like
a 3 second UPS :-)


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Follow-Ups:
- Re: gEDA-user: Alarm clocks and switching regulators
  - From: Dan McMahill

References:
- gEDA-user: Alarm clocks and switching regulators
  - From: Randall Nortman
- Re: gEDA-user: Alarm clocks and switching regulators
  - From: DJ Delorie
- Re: gEDA-user: Alarm clocks and switching regulators
  - From: Randall Nortman
- Re: gEDA-user: Alarm clocks and switching regulators
  - From: John Doty
- Re: gEDA-user: Alarm clocks and switching regulators
  - From: Randall Nortman
- Re: gEDA-user: Alarm clocks and switching regulators
  - From: John Doty
- Re: gEDA-user: Alarm clocks and switching regulators
  - From: Randall Nortman

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