Heating elements
How small? A 1 watt or 3 watt wirewound power resistor is pretty small, and
should tolerate 100 deg C.
Ray McArthur
Original Message
From: Jason 1 <plugger2@s...>
To: <basicstamps@egroups.com>
Sent: Monday, October 30, 2000 2:16 AM
Subject: [noparse][[/noparse]basicstamps] Heating elements
> I'm after a component or part that is designed to turn electricity
> into heat, like a toaster element. I'm really after something that is
> durable and small, like a solid-state component. It needs to heat up
> to sub boiling (100C) temperatures. Anyone have any ideas?
should tolerate 100 deg C.
Ray McArthur
Original Message
From: Jason 1 <plugger2@s...>
To: <basicstamps@egroups.com>
Sent: Monday, October 30, 2000 2:16 AM
Subject: [noparse][[/noparse]basicstamps] Heating elements
> I'm after a component or part that is designed to turn electricity
> into heat, like a toaster element. I'm really after something that is
> durable and small, like a solid-state component. It needs to heat up
> to sub boiling (100C) temperatures. Anyone have any ideas?
Comments
>I'm after a component or part that is designed to turn electricity
>into heat, like a toaster element. I'm really after something that is
>durable and small, like a solid-state component. It needs to heat up
>to sub boiling (100C) temperatures. Anyone have any ideas?
Peltier junctions can produce heat or cold. Here's one that will provide a
68 C difference, so (100 C - 68 C = 32 C) if you can provide 32 C it can do
the rest.
They EAT batteries for lunch, however.
[noparse][[/noparse]
http://www.allelectronics.com/cgi-local/SoftCart.exe/online-store/scstore/p-PJT-\
2.html?E+scstore
]
Hope that helps
Regards,
Bruce Bates
>Jason
>
>__________________________________________________________________
>Get your free Australian email account at http://www.start.com.au
ideas. . .
Doug
> To: "basicstamps@egroups.com" <basicstamps@egroups.com>
> From: Jason 1 <plugger2@s...>
> Date: Mon, 30 Oct 2000 17:16 +1000
> Reply-to: basicstamps@egroups.com
> Subject: [noparse][[/noparse]basicstamps] Heating elements
> I'm after a component or part that is designed to turn electricity
> into heat, like a toaster element. I'm really after something that is
> durable and small, like a solid-state component. It needs to heat up
> to sub boiling (100C) temperatures. Anyone have any ideas?
>
>
> Jason
>
> __________________________________________________________________
> Get your free Australian email account at http://www.start.com.au
>
>
>
>
>
into heat, like a toaster element. I'm really after something that is
durable and small, like a solid-state component. It needs to heat up
to sub boiling (100C) temperatures. Anyone have any ideas?
Jason
__________________________________________________________________
Get your free Australian email account at http://www.start.com.au
--- Jason 1 <plugger2@s...> wrote:
> I'm after a component or part that is designed to turn electricity
> into heat, like a toaster element. I'm really after something that is
> durable and small, like a solid-state component. It needs to heat up
> to sub boiling (100C) temperatures. Anyone have any ideas?
>
>
> Jason
>
> __________________________________________________________________
> Get your free Australian email account at http://www.start.com.au
>
>
>
>
__________________________________________________
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heat they burn up unless you have excellent thermal management to carry the
heat away from them.
The classic ways to generate heat are with a resistor (hey that's solid
state) or a Nicrome wire (ditto). If you can switch power on and off with
some current (and maybe AC?) how about a coffee immersion heater (little
coil that goes in a coffee cup) or a soldering iron element.
Regards,
Al Williams
AWC
*Floating point math for the Stamp, PIC, SX, or any microcontroller:
http://www.al-williams.com/awce/pak1.htm
>
Original Message
> From: Bruce Bates [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=cevMc2d4MTg9nU4SDThYS62nAS3hGujGLft5R6Fo2FcBPiFC9OxN_Kby9Xdo9m42TfZbooDfoZ0uipHTe-x8qQ]bvbates@u...[/url
> Sent: Monday, October 30, 2000 12:26 AM
> To: basicstamps@egroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] Heating elements
>
>
> At 10/30/2000 +1000 05:16 PM, you wrote:
> >I'm after a component or part that is designed to turn electricity
> >into heat, like a toaster element. I'm really after something that is
> >durable and small, like a solid-state component. It needs to heat up
> >to sub boiling (100C) temperatures. Anyone have any ideas?
>
> Peltier junctions can produce heat or cold. Here's one that will
> provide a
> 68 C difference, so (100 C - 68 C = 32 C) if you can provide 32 C
> it can do
> the rest.
> They EAT batteries for lunch, however.
>
> [noparse][[/noparse]
> http://www.allelectronics.com/cgi-local/SoftCart.exe/online-store/
scstore/p-PJT-2.html?E+scstore
]
Hope that helps
Regards,
Bruce Bates
>Jason
>
>__________________________________________________________________
>Get your free Australian email account at http://www.start.com.au
You didn't mention how big the thing you need to heat is.
If it's small, you could use a battery powered soldering iron and add
a temperature sensor to the element of your device. Then you can
modify the unit to allow you to use a PWM signal to control how hot
the unit gets. You should be able to get pretty good temperature
regulation with a simple fuzzy control logic.
The idea of a battery powered unit is along the lines of what Al had
mentioned about batteries getting eaten up. The battery irons are
rechargable.
Dave
--- In basicstamps@egroups.com, Jason 1 <plugger2@s...> wrote:
> I'm after a component or part that is designed to turn electricity
> into heat, like a toaster element. I'm really after something that
is
> durable and small, like a solid-state component. It needs to heat up
> to sub boiling (100C) temperatures. Anyone have any ideas?
>
>
> Jason
>
> __________________________________________________________________
> Get your free Australian email account at http://www.start.com.au
> into heat, like a toaster element. I'm really after something that is
> durable and small, like a solid-state component. It needs to heat up
> to sub boiling (100C) temperatures. Anyone have any ideas?
Hi Jason,
If you are looking for a commercial solution, take a look at
http://www.minco.com/heaters.htm
-- Tracy
Plain old power transistors make dandy heaters. They're cheap, readily
available, and usually easy to mount. To turn a transistor into a heating
element, just add a current limiter...
One way is to add a small resistor in the emitter circuit of an NPN power
transistor. When more than 0.6V develops across this resistor, it turns on
a small NPN that shunts base drive current away from the big guy. I'm no
good at ASCII schematic drawing, but I could send you a simple PDF if
necessary.
>I'm after a component or part that is designed to turn electricity
>into heat, like a toaster element. I'm really after something that is
>durable and small, like a solid-state component. It needs to heat up
>to sub boiling (100C) temperatures. Anyone have any ideas?
Mike Hardwick, for Decade Engineering -- <http://www.decadenet.com>
Manufacturer of the famous BOB-II Serial Video Text Display Module!
>
>Jason,
>
>Plain old power transistors make dandy heaters. They're cheap,
readily
>available, and usually easy to mount. To turn a transistor into a
heating
>element, just add a current limiter...
>
>One way is to add a small resistor in the emitter circuit of an NPN
power
>transistor. When more than 0.6V develops across this resistor, it
turns on
>a small NPN that shunts base drive current away from the big guy. I'm
no
>good at ASCII schematic drawing, but I could send you a simple PDF if
>necessary.
>
>>I'm after a component or part that is designed to turn electricity
>>into heat, like a toaster element. I'm really after something that
is
>>durable and small, like a solid-state component. It needs to heat up
>>to sub boiling (100C) temperatures. Anyone have any ideas?
>
>Mike Hardwick, for Decade Engineering -- <http://www.decadenet.com>
>Manufacturer of the famous BOB-II Serial Video Text Display Module!
Thanks Mike, that sounds interesting. I'm a beginner in electronics so
I would really appreciate it if you could send me the PDF file.
Jason
__________________________________________________________________
Get your free Australian email account at http://www.start.com.au