8 Apr
2012
8 Apr
'12
2:16 p.m.
BTW, about weller irons..
I got an EC2001 soldering iron without the base. I had one of that in
the past and it has a transformer, a circuit board and a (E X P E N S I V E)
exar IC that controls the temperature. Of course, I can do better and use
pwm, a mosfet and a microcontroller to drive this iron, but I know nothing
about the thermistor temperature curve. Maybe someone can help? If I could
at least know the resistance of the thermistor at 100, 200 and 300 degrees,
I'd be more than happy :) And create a new open source project :)
Do you have an form of thermometer (e.g. a thermocouple-based one) that
works over that temperature range? If so,. I'd try feeding the element
fro man adjustale PCU, measure the tip tempearture with the themocouple,
and also measure the thermistor resistance. Shouldn't tale too long to
plot the chracteristic curve...
-tony