good:
In Universar motor brush washer and AC. I want to control the speed. There are 4 speeds. The circuit for speed change is this:
I know if I have done well. With a PIC I control the optocouplers, only four speeds.
Any suggestions are valid.
Greeting.
Metaconta:
The circuit for speed change is this:
I can't see anything
...R
The circuit lacks mains supply and load, but lets assume that they are in the obvious place.
This is basically the standard DIAC/TRIAC circuit with 2 opto-coupler switched
resistances that can be selected, allowing 4 different speed settings. Seems
plausible.
Was there a question?
One observation: be safe with mains, make sure the circuitry is double-insulated and
physically cannot be touched when live or testing... Observe good PCB trace clearances
between HV and LV (ie lots of clearance, slots under the optoisolators if poss).