A
Antony N. Lord
- Jan 1, 1970
- 0
I've built a kit (Silicon Chip June 2005 "Tempmaster Temperature
Controller") to run my a fridge as a wine fridge.
The fridge is a 240v (Australia) commercial "cool drink" type fridge
drawing about 600W. I've replaced the old 'mechanical' thermostat with
this new electronic one to run is at a higher and more accurate
temperature.
The "output" is essentially a MOC3021 opto coupler driving a BT137F
triac.
However when the controller switches on the condenser / fan it often
clicks a few times (like its taking a few attempts to start it).
I've already tried incorporating a LC line filter without luck. A TVR
fitted between the active / switched active gets really hot (obviously
dissipating quite some power).
Any ideas what else I should be looking at?
Cheers, Antony
Controller") to run my a fridge as a wine fridge.
The fridge is a 240v (Australia) commercial "cool drink" type fridge
drawing about 600W. I've replaced the old 'mechanical' thermostat with
this new electronic one to run is at a higher and more accurate
temperature.
The "output" is essentially a MOC3021 opto coupler driving a BT137F
triac.
However when the controller switches on the condenser / fan it often
clicks a few times (like its taking a few attempts to start it).
I've already tried incorporating a LC line filter without luck. A TVR
fitted between the active / switched active gets really hot (obviously
dissipating quite some power).
Any ideas what else I should be looking at?
Cheers, Antony