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Subject: Re: RE : [Homebrew_PCBs] Unipolar stepper motor driver wiring

From: "Stefan Trethan" <stefan_trethan@...>
Date: 2005-06-21

On Tue, 21 Jun 2005 05:36:54 +0200, Phil <phil1960us@...> wrote:

> why do most hbridges and stepper controllers use schottkys?


because they are faster. all switchmode/pwm circuits use faster diodes.
In the simple controller suggested there is no chopping, the frequency is
low, a 1n400x could be ok.

ST