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heating elements

M

Michael Robinson

Jan 1, 1970
0
I've been wondering how the heat controls on high power heating element in
electric stoves, baseboard heaters and the like work. Is it PWM?
 
J

Jamie

Jan 1, 1970
0
Michael said:
I've been wondering how the heat controls on high power heating element in
electric stoves, baseboard heaters and the like work. Is it PWM?
Nope, that would cost too much.

Just on/off cycles. cycles that are in seconds of each time.


Some of them are so cheap, they just use bimetal temperature
switches


jamie.
 
R

Rich Grise

Jan 1, 1970
0
Michael said:
I've been wondering how the heat controls on high power heating element
in
electric stoves, baseboard heaters and the like work. Is it PWM?

In a way - they're usually controlled by a thermostat, which turns off the
power at one temp, and back on again at another, lower temp.

Sort of like PWM whose pulse width is measured in hours.

Hope This Helps!
Rich
 
P

Phil Allison

Jan 1, 1970
0
"Rich Grise is Wrong Again "
In a way - they're usually controlled by a thermostat, which turns off the
power at one temp, and back on again at another, lower temp.

** Only true of electric ovens.

For coils and hot plates, power control is by an adjustable thermal switch
that cycles on and off at a rate determined by its own self heating and the
setting on the dial.

Sort of like PWM whose pulse width is measured in hours.

** Bollocks.


...... Phil
 
J

Jasen Betts

Jan 1, 1970
0
I've been wondering how the heat controls on high power heating element in
electric stoves, baseboard heaters and the like work. Is it PWM?

yes, at a very low frequency. typically 1Hz or less.
 
F

F. Bertolazzi

Jan 1, 1970
0
Phil Allison:
"Rich Grise is Wrong Again "

For coils and hot plates, power control is by an adjustable thermal switch
that cycles on and off at a rate determined by its own self heating and the
setting on the dial.


** Bollocks.

Why? Isn't what you just described?
 
R

Rich Grise

Jan 1, 1970
0
F. Bertolazzi said:
Phil Allison:

Why? Isn't what you just described?

Yeah, but that's Phil.

Admittedly, I could have said "minutes" instead of "hours," but that
all depends on the application.

Cheers!
Rich
 
P

Phil Allison

Jan 1, 1970
0
"F. Bertolazzi"
Phil Allison:


Why? Isn't what you just described?


** The "hours" bit is totally absurd.

As even a fuckwit like you should have picked.


..... Phil
 
P

Phil Allison

Jan 1, 1970
0
"Rich Grise"
Yeah, but that's Phil.

Admittedly, I could have said "minutes" instead of "hours,"


** Err - try " seconds " !!

You lying fuckwit.
but that all depends on the application.


** Which we know and you are again lying about.


..... Phil
 
F

F. Bertolazzi

Jan 1, 1970
0
Phil Allison:
** The "hours" bit is totally absurd.

As even a fuckwit like you should have picked.

Hey, wait a minute...
 
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