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DC Choke

I am looking for a DC choke that will handle roughly 10A continuous, and is ~ 150uH (100uH to 200uH). I'm not sure where to look to pick up one. It seems that typically chokes with high current are low inductance.

What is the approximate size of a choke that will fit these specifications.

BTW it is to be used in series with a DC motor with low inductance, in order to match the motor's inductance to a specific motor driver.

Hopefully these specifications can result in a choke that is roughly no larger than 8 cubic inches (~ 2" x 2" x 2").

Thanks!

Reply to
Andrew
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Sorry, also wanted to note that I am not interested in winding the inductor myself, it has to be commercially available (or custom made, commercially available).

Reply to
Andrew

The energy stored in the magnetic field of an inductor is 1/2 * L*I^2, so for higher currents, the stored energy goes up fast. This implies larger, more expensive units for a combination of high inductance and high current.

The two most common forms for such inductors are probably powdered iron toroids and ferrite drum cores.

Here are examples from Digikey: Toroid, but a bit light on current

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Drum core
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By thew way, either type is quite easy to build, yourself (especially the drum core type), since the number of turns is pretty low.

Reply to
John Popelish

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Real Programmers Do things like this.
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Reply to
Jamie

Buck and a half from BGMicro.com

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Reply to
kell

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