Home Brew Forums

Home Brew Forums (http://www.homebrewtalk.com/forum.php)
-   Electric Brewing (http://www.homebrewtalk.com/f170/)
-   -   Phase Angle Controller (http://www.homebrewtalk.com/f170/phase-angle-controller-341906/)

onthekeg 07-17-2012 01:21 AM

Phase Angle Controller
 
Has anyone built one of these? I have a PWM on the boil kettle and am looking to try something new for giggles.
I found this unit online. http://www.nuwaveproducts.com/ssrman-1p.htm
http://www.nuwaveproducts.com/Images/ssrmanmounted.jpg
I was thinking of wiring that into a box with a random SSR and see how that compares to the PWM that I have.
If no one has done it no big deal, but was wondering if anyone had any experience?

Junkster 07-17-2012 02:25 AM

Interesting find! Please post the results of any testing you do!!!

looneybomber 07-17-2012 03:18 AM

I know very little about phase angle, and what knowledge I do have revolves solely around amplifiers for audio. In that sense, it's important to know phase angles so you know if your voltage rails can handle the pos/neg swings. With SSR's that operate either on or off, I don't see how adjusting the phase angle will help anything since on/off is associated with square waves.

aquenne 07-17-2012 03:38 AM

what kind of control are you looking to get out of this?

onthekeg 07-17-2012 04:37 AM

Just boil control, I think it will work better than a PWM, because I use my controller for temp control in other "heating applications."

onthekeg 07-17-2012 04:40 AM

Quote:

Originally Posted by looneybomber (Post 4256966)
I know very little about phase angle, and what knowledge I do have revolves solely around amplifiers for audio. In that sense, it's important to know phase angles so you know if your voltage rails can handle the pos/neg swings. With SSR's that operate either on or off, I don't see how adjusting the phase angle will help anything since on/off is associated with square waves.

My understanding is if you use a random SSR that won't wait for the zero cutoff, you can smooth out the frequency of the off and on. It may not make much difference for just boil control, but its pretty inexpensive and offers more control for about the same money. (More like a stove control.)

looneybomber 07-17-2012 01:51 PM

Oh it looks like I need to read up on SSRs instead. When you said random SSR, I imagined you reaching into a grab bag and working with what you pulled out.

_swede_ 07-17-2012 02:06 PM

All you need is one of these http://www.ebay.com/sch/i.html?_nkw=...va+r&_osacat=0

And a potentiometer. It is NOT a typical ssr, it's a modular phase angle control unit. All you need to do is hook the potentiometer across the control outputs, and the ac hot through the other two outputs, and voila, you have a variable control.

Lots more information here. http://www.artisan-distiller.net/php...hp?f=62&t=6079
And here. http://www.artisan-distiller.net/php...forum.php?f=62

onthekeg 07-17-2012 06:23 PM

Thanks Swede! This looks easier and cheaper than the PWM while allowing even better control.

_swede_ 07-17-2012 07:36 PM

The only shortfall is if you want to control multiple elements or have individual element control. These are well suited to a single element, but once you start running say two 4500's in a BK, then you would need to get a little creative with your wiring.

For my larger control panels, I use PWM because it can easily be manipulated for multiple element control, and each element is individually controllable. Check out my sig to see what I'm talking about.


All times are GMT. The time now is 04:15 PM.

Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.