R
Hi all,
I have a PTC heater that's self-regulated at 60C, rated at DC 24V20W. However this is still too hot for me, can I regulate it further? The ideal temperature would be around 40C.
I'm thinking about using PWM via MOSFET, and adjust the duty-cycle. But I'm not sure if the high frequency power cycle might harm the PTC.
Another option would be using a relay with a thermosensor, limiting the temperature in a window(say, 37C to 40C). But there could be delay between the PTC and sensor, and I would much prefer a more precise control(say, under 1C).
Anyway, any ideas?
I have a PTC heater that's self-regulated at 60C, rated at DC 24V20W. However this is still too hot for me, can I regulate it further? The ideal temperature would be around 40C.
I'm thinking about using PWM via MOSFET, and adjust the duty-cycle. But I'm not sure if the high frequency power cycle might harm the PTC.
Another option would be using a relay with a thermosensor, limiting the temperature in a window(say, 37C to 40C). But there could be delay between the PTC and sensor, and I would much prefer a more precise control(say, under 1C).
Anyway, any ideas?