Hi,
Depends on what you mean by AC motor. If it's just to turn on/off the AC motor, all you need is a relay or triac and turn the relay/triac on/off accordingly.
If you mean controlling the speed, you will need something more complex, like triac phase control / triac pulse skipping / sinusoidal pwm full bridge / frequency control with triac.
Instead of triac, back to back SCRs can also be used.
Hope this helped.
Tahmid.
so...ur suggestion use phase controller ... ok, i will try study on that...by the way, isn't the circuit can't be applicable...in my mind... i would like just to change the value of resistor for each of the relay..which mean the slower speed use much higher resistance...
Yea, use phase controller.
About your diagram, it's quite unclear. But you shouldn't be using resistance to control speed, bad idea.
Hope this helps.
Tahmid.
Hi,
I don't think you should be doing that with the resistors. Instead use phase control or frequency control although the latter will be more difficult.
Tahmid.
i currently practice to make itself serial to parallel input/output, parallel to serial input/output but i have problem to make the address & baud rate selection? any schematic for address & baud rate?