Re: 20 Amp dimmer control?

On 1/26/2012 10:34 AM, David Eather wrote:
> On Thu, 26 Jan 2012 20:14:23 +1000, Ken S. Tucker
> <(E-Mail Removed)> wrote:
>
>> I (we) use neat little dual burner hot plates on kitchen counter.
>> Last 2 units we purchased (from a GEnerally reputable
>> company), have dinky temperature contol settings, that are
>> now defunct. They are difficult to repair.
>> So now I have 4 burners and no reliable control.
>>
>> 1) What I need is a 20A dimmer (like a light dimmer), I'll use to
>> set my temperature, advise here would be ok.
>> I'm easy with building stuff like that myself, but maybe something
>> is available 'off the shelf'.
>>
>> 2) Later, if necessary I'll put in a feed back from a thermistor,
>> to set the temperature by duty cycling.
>>
>> I should do #1 for the learning curve and see how it works 1st.
>> Regards
>> Ken
>>
>>
>>
>
> A SSR like this:
>
> http://www.ebay.com/itm/Solid-state-...item19cc84785e
>
>
> with a heatsink can be driven by a 555 to do what you want.


We have a number of quad DMX compatible dimmers in stock at
http://www.ebay.com/sch/abeja/m.html..._from=&_ipg=25

--
Many thanks,

Don Lancaster voice phone: (928)428-4073
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
rss: http://www.tinaja.com/whtnu.xml email: (E-Mail Removed)

Please visit my GURU's LAIR web site at http://www.tinaja.com

"Ken S. Tucker" <(E-Mail Removed)> wrote in message
news:0a2ec4d0-3ccc-4175-b8c0-(E-Mail Removed)...
> On Jan 26, 11:39 am, Don Lancaster <d...@tinaja.com> wrote:
>>
>> We have a number of quad DMX compatible dimmers in stock
>> athttp://www.ebay.com/sch/abeja/m.html?_nkw=&_armrs=1&_from=&_ipg=25
>
> Sorry, what's acronym DMX?


DMX is an addressable control system used largely for theatrical lighting
control. It's a RS-422 differential unidirectional stream between the
controller (control board) and slave. Vey nice since everything is bussed
with a 5 pin XLR type connector - be it dimmer packs, smoke machines,
strobes or anything you can think of -except hoists. Since there is no
feedback for safety and confirmation that target position has been reached,
those applications are a no-no.