The compensation heater in the refrigerator and the indoor lamp of the defrosting heater are generally powered by AC power. Therefore, it is suitable to use the bidirectional thyristor as the switching device. In order to improve the safety performance, the thyristor optocoupler can be used to start the two-way controllable. Silicon switches are ideal.
Common optocoupler for refrigerator
The compensation heater in the refrigerator and the indoor lamp of the defrosting heater are generally powered by AC power. Therefore, it is suitable to use the bidirectional thyristor as the switching device. In order to improve the safety performance, the thyristor optocoupler can be used to start the two-way controllable. Silicon switches are ideal.
Common thyristor optocouplers:
MOC3063Based on the communication and isolation between the main control module and the motor control module, it is necessary to select a high-speed optical coupler.
High speed optocoupler:
TLP118,
6N136,
6N137IGBT/MOSFET optocouplers are often used in inverter compressor control modules to drive IGBT or MOSFET inverter modules.
IGBT/MOSFET drive optocouplers:
TLP701,
TLP352,
PC925,
PC923,
HCPL-3120
