I'm completeing a project that I made involving an AC motor, but I need help designing a timer circuit for it, if some folks would be kind enough to help out.
Here's the motor's specs, from the manual itself:
120 V AC
60 Hz
3500 Rpm
108 Watts
(no listing for Amps, either in the manual or on the motor itself. Sorry)
It's currently switched on by a standard pushbutton switch. I plan to replace this with a rocker switch soon. Other than the switch, it's wired directly to main AC power - this is as it came from the factory.
What I'd like to do, is have a simple, but programmable timer installed in the base of the machine I built. Either with a dial-type selector or buttons inputting a time which is displayed onto an LED readout. The timer should have a range of 30 minutes to 4 hours. I want to be able to set the timer, then flick the switch, and it will run the specified time and then shut itself off after that amount of time. I also want to be able to turn it on and off via the rocker switch only, bypassing the timer if necessary.
I'll be putting this together probably via Radio Shack parts (in stock and special order). Cost is a factor, of course - cheaper s better. The timer does NOT have to be precise - a few minutes eiiher way is fine. I"m very handy and good building things, but I've not tried to build a circuit before - although I have modified and repaired some in the past, and my soldering skills are good.
Can anyone assist?
Here's the motor's specs, from the manual itself:
120 V AC
60 Hz
3500 Rpm
108 Watts
(no listing for Amps, either in the manual or on the motor itself. Sorry)
It's currently switched on by a standard pushbutton switch. I plan to replace this with a rocker switch soon. Other than the switch, it's wired directly to main AC power - this is as it came from the factory.
What I'd like to do, is have a simple, but programmable timer installed in the base of the machine I built. Either with a dial-type selector or buttons inputting a time which is displayed onto an LED readout. The timer should have a range of 30 minutes to 4 hours. I want to be able to set the timer, then flick the switch, and it will run the specified time and then shut itself off after that amount of time. I also want to be able to turn it on and off via the rocker switch only, bypassing the timer if necessary.
I'll be putting this together probably via Radio Shack parts (in stock and special order). Cost is a factor, of course - cheaper s better. The timer does NOT have to be precise - a few minutes eiiher way is fine. I"m very handy and good building things, but I've not tried to build a circuit before - although I have modified and repaired some in the past, and my soldering skills are good.
Can anyone assist?