Quote:
Originally Posted by Pdelcast
The better the battery, the less ripple current ... so what we do is size the capacitors to something that is reasonable, and use a high switching frequency to optimize the capacitance (higher switching = lower ripple current.)
But, the enemy is ripple voltage -- and the better the battery, the less ripple voltage.  |
The switching is on the motors, not on the dc source. If the TVS spikes a big cap it should smooth it out - i suppose a batt is a big cap, so patrick and brian are correct. But I imagine when the motor throws too much back that the load has to be disipated somewhere....The bat is
usually a good place. But cheaps batts will not handle it. Can't the excess be clamped off to a big resistor or light bulb or maybe some fireworks and pretty sparks ??
I notice also that patrick and brian never like band-aid solutions like fans and heat.. Rather be efficient and never generate the problem in the first place...typical two too good engineers :-).