Hi,
This is the control board for a poultry incubator, it regulates temperature by pulsing 240V output to the heater. When it's heating up the heater is on full, when it's in control it pulses on and off. The fault is that it can't get up to temperature, it will control stably to a lower temperature but appears not to have enough power.
Testing shows the output to the heater, when on full, shows 130V rather than 240. Without a scope to confirm I'm guessing that it's losing half the AC wave form.
The switching circuit comprises an opto isolator zero volt IC, and a triac. My understanding is that a triac needs +ve at the gate to switch +ve load, and -ve to switch negative. If that's correct then the fault could be either the IC or the output triac.
The triac is marked "912C006", "TIC2" and "PHILIP ES" on three lines. That could be "PHILIPI NES". See photo.
Would anyone be able to identify the part, and suggest a suitable replacement? I can't find any reference to a triac just called "TIC2".
Thanks, Tony S
This is the control board for a poultry incubator, it regulates temperature by pulsing 240V output to the heater. When it's heating up the heater is on full, when it's in control it pulses on and off. The fault is that it can't get up to temperature, it will control stably to a lower temperature but appears not to have enough power.
Testing shows the output to the heater, when on full, shows 130V rather than 240. Without a scope to confirm I'm guessing that it's losing half the AC wave form.
The switching circuit comprises an opto isolator zero volt IC, and a triac. My understanding is that a triac needs +ve at the gate to switch +ve load, and -ve to switch negative. If that's correct then the fault could be either the IC or the output triac.
The triac is marked "912C006", "TIC2" and "PHILIP ES" on three lines. That could be "PHILIPI NES". See photo.
Would anyone be able to identify the part, and suggest a suitable replacement? I can't find any reference to a triac just called "TIC2".
Thanks, Tony S
- TL;DR
- Can anyone identify a suitable replacement for this triac?