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From: "flier" <FLIER-at-sbcglobal.net>
Subject: SSRs, relays, speed controls
Date: Wed, 03 Mar 2004 17:09:07 -0500
Reply-To: tanks-at-rctankcombat.com 
O gurus of the RC tank world...

A question.  

To keep costs down (given that the applicable 
ucontroller programming would have to be done), 
couldn't one implement full two motor reversable 
speed control using only two SSRs and four regular 
SPDT relays?  Use the SSRs to provide the high 
current PWM and the SPDT relays to do the H-bridge 
switching?  Specifically, use a PIC 16F876 to mix 4 
outputs driving the relay switching and the two PWM 
modules driving the SSRs...

This seems like it would work but am I missing 
something?

Regards,

Ted
T022 (incorporating lead ballast)