AC voltage driver?

[adrianstraka]

AC voltage driver??

Do AC voltage drivers exist?
I want to develop a control system using a DAQ to vary the amplitude of a 110V AC sine signal being fed into a 110V AC fan motor, in order to control its speed. Does anyone have any suggestions

The method I was going in is to complicated, it involves generating a variable +/- 10v sine signal from the DAQ feeding it into a power amplifier and then feeding the amplified voltage to the motor.

I appreciate all help and suggestions.

Thanks

 

[dlgoff]

With the currents you need to run a fan, I would suggest using a http://www.variac.com/staco_Variable_Transformer_Map.htm" [Broken].

Welcome to PF.

 

[waht]

A triac regulator might work too if you don't require much power.