choosing a bleed resistor

[the great waldo]

Hi
Does the resitor in parallel with the caps alter the voltage coming into the controller whilst running the motors and controller at all? If so in which way?

Cheers

Andrew

[Doddy]

Hi
Does the resitor in parallel with the caps alter the voltage coming into the controller whilst running the motors and controller at all? If so in which way?

Cheers

Andrew

With an unregulated PSU, the bleed resistor will lower the terminal voltage slightly. Provided the PSU is specified sufficiently for the steppers then the resistor effect will be negligible.

I'd be looking to dissipate 2->5W just to keep the temperature down and keep the costs low.

.