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Old 30th January 2009, 01:10 AM   #1
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Default Amplifier +V, -V 0V

Hi all, this is not audio related but I figure the concepts are very much in the realm of everyone here and was wondering if anyone had an idea about it.

Basically, I'm trying to build a circuit that will take a high/low signal from a microcontroller and output either a +V, -V or 0V at relatively high power (approx 10A continious, 50V).

Any help is greaaaaaaaaaaaaaaaaaaaatly appreciated

Cheers!
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Old 30th January 2009, 01:45 AM   #2
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Two bits for control.

+5 on bit 0 gets you v+ out

0 on bit 1 gets you v- out

o on bit 0 and +5 on bit 1 gets you 0V out

+5 on bit 0 and 0 on bit 1 gets you excitement.

probably want some source degeneration resistance on
the input devices to limit their drive current.
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Old 30th January 2009, 01:57 AM   #3
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Thank you so much for that circuit - exactly what i was after
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Old 30th January 2009, 02:12 AM   #4
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Location: Santa Cruz, California
Quote:
Originally posted by Nelson Pass

+5 on bit 0 and 0 on bit 1 gets you excitement.

...and fresh underwear




technically, the 0V state is high impedance and will be whatever the receiving circuit pulls towards.
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