Xref: utzoo comp.ai.neural-nets:198 sci.electronics:3674
Path: utzoo!attcan!uunet!lll-winken!lll-tis!ames!mailrus!nrl-cmf!cmcl2!rocky8!cucard!aecom!krishna
From: krishna@aecom.YU.EDU (Krishna Ambati)
Newsgroups: comp.ai.neural-nets,sci.electronics
Subject: Re: Sigmoid transfe function
Keywords: A Circuit ?
Message-ID: <1982@aecom.YU.EDU>
Date: 22 Aug 88 18:08:46 GMT
Organization: Albert Einstein College of Medicine, NY
Lines: 34


Concerning circuits that yield a tanh transfer function, I wonder
whether the following will work?

			     D1

			____|/|___
		       |    |\|   |
		    ---|          |---
		   |   |____|\|___|   |
		   |        |/|       |
		   |         D2       |
		   |                  |
		   |                  |
		   |         C        |
		   |--------| |-------|
		   |                  |
		   |         R        |
		   |-------/\/\-------|
		   |                  |
		   |                  |
		   |       |\         |
     V(in) .-------|-------|-\        |
			   |  \_______|_____. V(out)
			   |  /
		   |-------|+/
		   |       |/
		   |
		  GND

What is the transfer function of this circuit?

Krishna Ambati
krishna@aecom.uucp
ins_aajk@jhunix.uucp