Re: Drive logic/motor power supply


FyberOptic wrote:
Hiya, I was considering adding either a floppy and/or hard drive into a
project I'm working on, and since either requires 12v to run the
motors, I got to wondering about something. Are the logic and motor
components of such a drive totally isolated from one another? I mean,
if I want to power the logic board of a drive from the power source of
the project itself, but I want to power the motor from an independent
external source, is this possible without frying the other side? One
would think this would be the case, but I thought it's best to confirm
before I start sticking things together!

All you really need is one power supply at +12V DC. Then add a +5V
regulator to the rails of the +12V DC. As long as you add a surge
protection diode to the inputs of the motor, anode to ground, cathode
to +, your pretty much safe.

.

Relevant Pages

  • Re: Bridgeport boss 4 Spindle not powering up (continued)
    ... O.K. Though low spindle oil would simply make it noisy, ... Power after main fuses, power after Transformer 1, power ... disable the contactors so there can be no power to the motor. ... stepper motor drivers when the steppers are stopped, or moving slowly, ...
    (rec.crafts.metalworking)
  • Re: Bridgeport boss 4 Spindle not powering up (continued)
    ... O.K. Though low spindle oil would simply make it noisy, ... Power after main fuses, power after Transformer 1, power ... disable the contactors so there can be no power to the motor. ... stepper motor drivers when the steppers are stopped, or moving slowly, ...
    (rec.crafts.metalworking)
  • Re: philosophical topic: one loco, two motors
    ... keep wondering whether a motor per power bogie is a good idea or not. ... of their secondary pick-ups on the tyred wheels. ...
    (uk.rec.models.rail)
  • Re: timer- 120V 0.1 amp 50% on circuit
    ... Mike Westbye wrote: ... > I've done some minor electonic repairs on power supplies with not ... > I bought a rebuilt motor which runs double speed for another model. ... the TDR up like this Notepad): ...
    (sci.electronics.basics)
  • Re: Bridgeport boss 4 Spindle not powering up (continued)
    ... you need to reset a safety interlock on the motor switch pod ... I can work my way through the average power ... activate the spindle all he would get would be a buzzing sound. ... each for a different axis stepper motor drive). ...
    (rec.crafts.metalworking)