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A Pulse Power Amplifier for Biological Stimulation

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1 Author(s)
Harry Ludwig ; Medical Electronics and Lab. of Neurophysiology, University of Wisconsin, Madison, Wis.

A power amplifier designed for use as a biological stimulator is described. It is driven by a dc voltage or a pulse generator with an amplitude of 50 volts. The output power of up to 250 volts and 100 ma is precisely controlled. The rise time is less than 5 ¿sec. A dual-channel version whose outputs may be independently controlled and mixed is also described. The circuit for the +400 volts and ¿300 volts regulated power supplies is shown.

Published in:

IRE Transactions on Medical Electronics  (Volume:ME-7 ,  Issue: 1 )