Re: will this work for a element control?
- I think you were expecting a bit much from a light dimmer switch. I
got my design off the Web or even the Forum. It uses a few simple
parts (including a largish heat sink and also a fairly hefty Triac
and Diac) that can be bought for less than £5.
As a radio ham, I know that interference can be caused, and the
usual way to cure this is to take a few turns of cable round a
ferrite ring - I'd wait and see if you have any complaints first.
The alternative to this is a United Automation controller from
Southport, Lancs, but these cost around £27. These are very small
and neat, and I believe are the basis for Sutronics controllers who
are tart them up and put them in a box - and charge accordingly.
In the end I got an industrial weight controller off the web and
added a voltmeter and switch. The latter was not really necessary as
you can unplug from the socket. The voltmeter is useful, however,
and can be closely corelated to head temperature which I think is
useful. I have found around 50 volts ac is typical once you've got
up steam, driving a 3KW element from a washing machine.
-- In Distillers@yahoogroups.com, "Firefox" <foxyfoxy50@...> wrote:
> IAs stated in previous replies quite pricey! I constructed a very
> controller for my 3KW element using a lighting dimmer switch. Ireplaced the
> Triac with a 3KW+ power Triac and bypassed the choke, I fried itfirst LOL.
> I do realise that radio interference suppression is out the windowbut I
> have used it for several years now and it's still working well.required. DO NOT
> Just a little electrical knowledge and soldering practice
> ATTEMPT this if not confident and qualified.11/02/2007
> Hope this helps, any comments welcome.
> No virus found in this outgoing message.
> Checked by AVG.
> Version: 7.5.441 / Virus Database: 268.17.36/681 - Release Date:
You are obviously quite correct about the heatsink. I used a heavy duty aluminium box and attached the Triac with thermal compound. This works very well, the box does get quite warm but not hot. The Triac I replaced the dimmer switch one with was a 25 Amp so capable of running a 6KW heater. The overall finished job was built for less than £10. I would of liked a switching controller but not cost effective.
No virus found in this outgoing message.
Checked by AVG.
Version: 7.5.447 / Virus Database: 268.18.5/707 - Release Date: 01/03/2007 14:43