Hello all, not sure if this is posted in the correct place or not but I'm working on a project I could really use some help with.
I have built a circuit designed to do ac phase control. The circuit will dim a light bulb but I can not for the life of me get it to control a single pole motor's speed. When I connect it to the motor the motor just turns very slowly while humming. Any input would be greatly appreciated.
A picture of the circuit is attached, it uses an H11AA1 to detect zero cross then triggers a BT137 triac through an moc3010 optocoupler. The yellow box is part number CBBX2 and to my understanding is a snubber but I may be mistaken.
The motor is a single pole shaded AC motor 115v, 1.4 LRA and I have previously controlled it's speed with an off the shelf light dimmer. I only really need two speeds controlled by a microcontroller so I am also open to other ideas.
I have built a circuit designed to do ac phase control. The circuit will dim a light bulb but I can not for the life of me get it to control a single pole motor's speed. When I connect it to the motor the motor just turns very slowly while humming. Any input would be greatly appreciated.
A picture of the circuit is attached, it uses an H11AA1 to detect zero cross then triggers a BT137 triac through an moc3010 optocoupler. The yellow box is part number CBBX2 and to my understanding is a snubber but I may be mistaken.
The motor is a single pole shaded AC motor 115v, 1.4 LRA and I have previously controlled it's speed with an off the shelf light dimmer. I only really need two speeds controlled by a microcontroller so I am also open to other ideas.
Attachments
-
324.6 KB Views: 19