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'[PICLIST] [PIC] Thermostat circuit needed'
2002\06\02@194016 by m_imsic

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Does anyone have a circuit for a thermostat?  I would like to build on
the control the temperateure within a "hotbox" I have made for curing
fibreglass layups.

Michael

Melbourne, Australia
ICQ 3481522

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2002\06\03@082248 by Roman Black

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Hi Michael, can you give more details? I have a
home-made "incubator" here I use for curing polyester
and epoxy resins, do you have specific size or temp
that you need to work around?
-Roman



Michael Imsic wrote:
>
> Does anyone have a circuit for a thermostat?  I would like to build on
> the control the temperateure within a "hotbox" I have made for curing
> fibreglass layups.
>
> Michael
>
> Melbourne, Australia
> ICQ 3481522

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2002\06\03@091057 by m_imsic

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Roman,

The hot box consists of two 25 watt globes fitted to a large foam
container.  The globes are wired to a dimmer switch which allows me to
control the temperature.  I don't need prescise regulation, more over
temp protection.  For example the heating turned off at about 40 deg. C
(104F) and back on again at 20 deg. C (68F).  I would love to hear about
your incubator.

Michael

> {Original Message removed}

2002\06\04@125421 by Peter L. Peres

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On Mon, 3 Jun 2002, Michael Imsic wrote:

>Roman,
>
>The hot box consists of two 25 watt globes fitted to a large foam
>container.  The globes are wired to a dimmer switch which allows me to
>control the temperature.  I don't need prescise regulation, more over
>temp protection.  For example the heating turned off at about 40 deg. C
>(104F) and back on again at 20 deg. C (68F).  I would love to hear about
>your incubator.

Cannibalize a bimetal thermostat from a clothesiron or washing machine
(has remote sensing bulb). This will fix your problem immediately.

A good quality thermostat is overkill if you do not decide what part of
the box you want to measure or if you do not have foorced circulation to
keep everything at the same temperature.

Peter

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