Hi guys,
I am currently looking for a way to detect if a heater element has either blown or been unplugged, the heater will be the screw in ceramic type. I could also use an incandescant reflector bulb too.
heaters will be anything between 60w and 250w
I came across this circuit whilst looking for a solution.
**broken link removed**
My idea was to replace the fuse, with my heater. The green led and resistor would be removed and so would RL1.
the live feed in this circuit would be fed using a Triac so the heater would be pulsing on/off at around 1 second intervals.
the red led would be an opto isolator, in the event of heater failure the optoisolator output will send a signal to a PIC to tell it that it has failed.
Can anyone see any problems with this or suggest any better improvements, basically will it work??
I am currently looking for a way to detect if a heater element has either blown or been unplugged, the heater will be the screw in ceramic type. I could also use an incandescant reflector bulb too.
heaters will be anything between 60w and 250w
I came across this circuit whilst looking for a solution.
**broken link removed**
My idea was to replace the fuse, with my heater. The green led and resistor would be removed and so would RL1.
the live feed in this circuit would be fed using a Triac so the heater would be pulsing on/off at around 1 second intervals.
the red led would be an opto isolator, in the event of heater failure the optoisolator output will send a signal to a PIC to tell it that it has failed.
Can anyone see any problems with this or suggest any better improvements, basically will it work??