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[ATM] Looking for the best PWM cycle time for dew heaters

To: atm@atmlist.net
Subject: [ATM] Looking for the best PWM cycle time for dew heaters
From: AMaroney@sptimes.com
Date: Thu, 5 Apr 2007 08:47:10 -0400
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Has anyone figured out the best pulse width modulation (PWM) time for a 
dew heater controller?  Specifically, how long should one 100% cycle be?  
If it were too long the dew heater would noticeably cool off before 
heating up again (running at less than 100%), but is too short a problem, 
say a few dozen cycles per second?  I was thinking of using a PIC16F88 
(yes, a 555 could do it also) and some IRF510s as the 12v switches. 
Thanks.

Allen
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Follow-Ups:
- Re: [ATM] Looking for the best PWM cycle time for dew heaters
  - From: "Don Clement" <don_clement@charter.net>
- Re: [ATM] Looking for the best PWM cycle time for dew heaters
  - From: "Lawrence D. Lopez" <lopez@mv.mv.com>

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