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RE: [APML] Chamber Controller Schematic

Thats more likely.
 
Chris
-----Original Message-----
From: owner-astro-photo@seds.org [mailto:owner-astro-photo@seds.org]On Behalf Of Steve...
Sent: Thursday, November 21, 2002 6:48 PM
To: astro-photo@seds.org
Subject: Re: [APML] Chamber Controller Schematic

Chris,
 
I think the 1000 uf capacitor is on the wrong side of the regulator. It should be on the output of the bridge.
 
Steve...
----- Original Message -----
To: APML
Sent: Thursday, November 21, 2002 7:44 PM
Subject: [APML] Chamber Controller Schematic

Here is a sketch of my Lumicon model 300 hyper kit temp chamber controller I built for less than $25 in radio shack parts.  The key element is the thermistor, a temperture sensitive resistor available at Digikey.com for example or Newark that makes it all work.  Since I built this thing in the mid 80s, Im not sure you can still get the N chanel mosfet listed, but most any will work.
 
Any electronics technician could get this circuit working in no time.  The schematic is at:
 
 
Its a bit crude, but without actually disecting the box, I cant see the pinouts on some of the parts.
 
Chris