47320Re: [beam] Re: Bolt H-bridge, CD H-bridge, EmiterFollower H-bridge
- Feb 1, 2005Thanks,
--- wilf_nv <wrigter@...> wrote:
> Eric the librarian, has done a thorough analysis of
> the Bolt bridge
> The Bolt bridge is not smokeless (selfdestructs if
> the inputs are
> floated) and while simple, is not particularly
> efficient especially
> at low currents. Requires full rail to rail input
> drive or else.
> The emitter follower bridge is the simplest discrete
> component bridge
> requiring no resistors at all. It has the highest
> current efficiency
> with all current passing through the load. It does
> have a
> significant voltage drop that reduces efficiency
> with low voltage
> supplies. There are ways to improve this voltage
> drop by overdriving
> the base inputs beyond the rails.
> The current dump (CD) bridge combines the 240
> motordriver with the
> emitter follower bridge. The 240 supplies low
> current with low
> voltage drop while the emitter follower transistors
> kick in under
> high load conditions.
> --- In firstname.lastname@example.org, DrewB
> <psycholist2000@y...> wrote:
> > As time permits, can I get a comparison between
> > "Bolt Smokeless H-Bridge," The "CD H-Bridge," and
> > "Emiter Follower H-Bridge"?
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