motor with brake? - Electronic Circuits Projects Diagrams Free

blibala · 29th October 2003, 04:49 PM

can i brake a dc motor and dont let it to rotate?or i need special motor for braking?
can anyone give me some ideas.plz?

Sebi · 29th October 2003, 05:08 PM

When the supply voltage disconnected, the motor run and generate voltage. With load You can brake it.

ivancho · 29th October 2003, 05:20 PM

Depending on how you brake the motor different thing can happen. The motor will always generata a back EMF when voltage is abruptly removed, since the magnetic field in the windings will colapse. This spike can create a lot of trouble if not taken into account.

Diodes are use to solve this problem. Also a small resistance large wattage resistor are used as well. A combination of Resistor and cap is also used.

try searching for snubber circuits.

Good Luck

Ivancho

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29th October 2003, 04:49 PM	(permalink)
blibala	motor with brake? can i brake a dc motor and dont let it to rotate?or i need special motor for braking? can anyone give me some ideas.plz?

29th October 2003, 05:08 PM	(permalink)
Sebi	When the supply voltage disconnected, the motor run and generate voltage. With load You can brake it.

29th October 2003, 05:20 PM	(permalink)
ivancho	Depending on how you brake the motor different thing can happen. The motor will always generata a back EMF when voltage is abruptly removed, since the magnetic field in the windings will colapse. This spike can create a lot of trouble if not taken into account. Diodes are use to solve this problem. Also a small resistance large wattage resistor are used as well. A combination of Resistor and cap is also used. try searching for snubber circuits. Good Luck Ivancho