I am currently trying to repair a pool chlorinator controller that has a problem with the power supply.
I cannot identify the IC that is used in this unit. It is marked Q311 VJ34 but i can not find it anywhere. The Q may be a letter O or a zero, it is not clear.
It is low power, switches 380VDC and has integral switching device (no external mosfet).
I have attached a sketch of the circuit.
If anyone can offer suggestions as to what the device may be then i would be extremely grateful.
The equipment supplier refuses to help with this matter.
Thanks in advance for any ideas,
Richard
aka lungchard but that is a long story.