- Tue Oct 07, 2014 1:34 pm
#175674
Pretty much a newb here. I'm a sculptor looking to set up an efficient independent circuit. I've got a 20RPM 6-12V DC gear motor from Sparkfun.
The specs are:
Stall Current: 1 Amp
No Load Current: .08 Amps
Insulation Resistance: 20 MOhms
Stall Torque 375 oz-in
It needs to power a 17" pulley driven steel ferris wheel for about 8 hours a day before recharge. I'd like to control the speed with a potentiometer.
I'm looking at running 4 x 3.7 v 1000mA lithium ion rechargeable batteries in a series to bring up the voltage. I think I need a 12v regulator in the mix. I think I need to control the amperage with more than a pot switch, though. Should I have a fuse or power diode in there? I've never taken a class or workshop in electrical engineering although, I'd like to in the future. I'm just working off tutorials and info pages. I'm having trouble finding model circuits schematics that don't over simplify or over complicate what I'm trying to do. The only thing I know for sure is Power = Voltage x Current and Resistance = V/C I'm not sure how to apply that to the relationship between the battery and the Motor and how to limit the waste. Can anyone help me figure out how to figure this out? Thanks in advance.
The specs are:
Stall Current: 1 Amp
No Load Current: .08 Amps
Insulation Resistance: 20 MOhms
Stall Torque 375 oz-in
It needs to power a 17" pulley driven steel ferris wheel for about 8 hours a day before recharge. I'd like to control the speed with a potentiometer.
I'm looking at running 4 x 3.7 v 1000mA lithium ion rechargeable batteries in a series to bring up the voltage. I think I need a 12v regulator in the mix. I think I need to control the amperage with more than a pot switch, though. Should I have a fuse or power diode in there? I've never taken a class or workshop in electrical engineering although, I'd like to in the future. I'm just working off tutorials and info pages. I'm having trouble finding model circuits schematics that don't over simplify or over complicate what I'm trying to do. The only thing I know for sure is Power = Voltage x Current and Resistance = V/C I'm not sure how to apply that to the relationship between the battery and the Motor and how to limit the waste. Can anyone help me figure out how to figure this out? Thanks in advance.