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Search took 0.00 seconds. Search: Posts Made By: jlinstrom

Forum: Appliances & Gadgets

10-15-09, 09:33 AM

Replies: 14

Fireplace and outside air

Views: 16,538

Posted By jlinstrom

cold air feed

I'm tossed between a passive air input tube and forced air...
Fans and impellors are a hassle to size and run, but fire draft will draw air in from SOMEWHERE, best if from a desired source. ...

Forum: Solar Power

08-20-09, 05:28 PM

Replies: 0

MPPT Design suggestions

Views: 4,274

Posted By jlinstrom

MPPT Design suggestions

As time permits I'd like to work on a DIY circuit board. What is/are the common storage battery voltages? I'd assume 12V lead acid, but I'm not doing anything solar, except for EE design work on the...

Forum: Appliances & Gadgets

08-20-09, 05:12 PM

Replies: 14

Fireplace and outside air

Views: 16,538

Posted By jlinstrom

fireplace & fresh air

I spoke too soon - I googled again and found a bunch also. This was from 6 months ago or so...
Big deal about drafts and 'tight house' and it all makes sense.

thanks-
johnl

Forum: Appliances & Gadgets

08-19-09, 02:22 PM

Replies: 14

Fireplace and outside air

Views: 16,538

Posted By jlinstrom

fireplace and outside air

yeah, I figured that.
But even if I did that - what about backfire protection, vent size, a cold air pump...?
I can't believe I'm the first bozo to ask this question and the firplace insets I've...

Forum: Appliances & Gadgets

08-18-09, 06:08 PM

Replies: 14

Fireplace and outside air

Views: 16,538

Posted By jlinstrom

Fireplace and outside air

I want to put a free-standing fireplace in my cabin and am curious about using (cold) outside air for combustion. I know using (warm) house air is dumb, but net searches haven't pulled up much...

Forum: Solar Power

08-18-09, 05:42 PM

Replies: 2

Solar MPPT

Views: 9,478

Posted By jlinstrom

MPPT circuit

I tried to attach the EDN article as a .pdf <alas!> Here it is.
Solar-array controller needs no multiplier to maximize power - 12/5/2008 - EDN (http://www.edn.com/article/CA6619019.html)

It is...

Forum: Solar Power

08-18-09, 02:32 PM

Replies: 2

Solar MPPT

Views: 9,478

Posted By jlinstrom

Solar MPPT

Solar arrays have a power curve with a maximum power point and the device that sets this point is called a Maximum Power Point Tracker. It's the electrical equivalent of a variable speed transmission...

Showing results 1 to 7 of 7

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