The Cyber-Spy.Com Usenet Archive Feeds Directly
From The Open And Publicly Available Newsgroup
This Group And Thousands Of Others Are Available
On Most IS NNTP News Servers On Port 119.
Cyber-Spy.Com Is NOT Responsible For Any Topic,
Opinions Or Content Posted To This Or Any Other
Newsgroup. This Web Archive Of The Newsgroup And
Posts Are For Informational Purposes Only.
From: Kevin McMurtrie
Subject: Re: Triac Hack?
User-Agent: MT-NewsWatcher/3.2 (PPC Mac OS X)
Date: Mon, 23 Sep 2002 03:36:58 GMT
NNTP-Posting-Date: Sun, 22 Sep 2002 20:36:58 PDT
In article ,
>[ This is a repost of the following article: ]
>[ From: EskWIRED@panix.SPAMBLOCK.com ]
>[ Subject: Triac Hack? ]
>[ Newsgroups: sci.electronics.basics ]
>[ Message-ID: ]
>I use a standard 600 watt dimmer switch in an unconventional way - to
>control the speed of a fan motor in a hot air popcorn popper which I use
>to roast coffee. It works well.
>However, if I turn it down only about a quarter turn, the motor gets
>insufficient current, and it stops. This is bad for a number of reasons,
>including safety reasons. I'd like to either replace the pot with one
>witha lower maximum resistance, or put a resistor in parallel with the pot
>so that even with it turned all the way "down", enough juice will reach
>the motor so it still operates the fan.
>Can anybody get me started?
>Which method makes more sense to you guys? How would I guestimate the
>proper sized resistor?
>If you can't say something nice,
>say something surrealistic.
> - Zippy
What type of a motor is used? If it's the kind that runs off DC too,
you're in luck. There was a circuit posted here recently to regulate a
motor's speed by giving it a voltage that's compensated for the motor's
The kind that runs off AC only is a problem. They're very weak when
they're not running at normal speed. You could try to put a thermistor
in the dimmer for feedback but it would probably cycle.
I think the easiest method would be to restrict the airflow with a
Go Back To The Cyber-Spy.Com
Usenet Web Archive Index Of
The sci.electronics.design Newsgroup