Search found 2 matches

by hamburger
Tue Jan 05, 2010 4:17 pm
Forum: General Discussion
Topic: Dew Zapper and PWM DC Motor Controller
Replies: 10
Views: 1650

Re: Dew Zapper and PWM DC Motor Controller

Thanks for the replies, I'm a new N&V subscriber and figured I'd try these forums. The wire is from an old installation that plugged into a outdoor outlet. I got about 50ft and don't have any information about the specs or power rating. Just know it was used to prevent ice dams on roofs. The 40 watt...
by hamburger
Mon Jan 04, 2010 4:22 pm
Forum: General Discussion
Topic: Dew Zapper and PWM DC Motor Controller
Replies: 10
Views: 1650

Dew Zapper and PWM DC Motor Controller

I am making a dew zapper for a telescope using a motor controller (12v in, 12v out 15A). I figure I need maybe 40 watts (drawing 2 amps) at each of the heating bands (I plan on having 4 heating bands, each will wrap a couple times around a eyepiece and finder scope, etc). I am using the leftovers of...