Hello: proportional controllers from the Old Country are also available
for around $15 on ebay. The one i have uses type K thermocouple.
Don
On 2019-10-12 18:13, Perry Sandeen via time-nuts wrote:
Yo Bubba Dudes!,
The suggestion was made to use a ebay item number 192112054053 heater
for this project.
Now it's cheap and has a digital reading.
BUT
It is a bang- bang controller using a relay. At some point that relay
will stop working. Also all designs I've seen for good temperature
control use proportional solid state controllers. There are plenty of
free designs on the internet.
Lastly, if one believes that this is long term reliable controller
that will deliver .1 degree accuracy, for that price, please contact
me off line and I will set you up with some really cheap (but slightly
scorched and a burned wood smell) lots to where you can build your
dream home here in California.
Regards,
Perrier
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--
Dr. Don Latham AJ7LL
PO Box 404, Frenchtown, MT, 59834
VOX: 406-626-4304
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