From: RWolf99@aol.com
Message-ID: <b4.a62cf17.26e6d5d9@aol.com>
Date: Tue, 5 Sep 2000 19:03:53 EDT
Subject: Control Vision EXP2 Bus
To: lancair.list@olsusa.com
Reply-To: lancair.list@olsusa.com
Mime-Version: 1.0

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Jerry is correct that the Control Vision EXP2 Bus is a power distribution 
system that replaces the circuit breakers with faster acting Polyswitches (a 
kind of solid-state resettable circuit breaker -- I'll let the EE's describe 
it).  The system is limited to 40 amps total.  You can use the switches it 
comes with, or substitute your own. 

There is a feature that senses bus voltage and shuts off the alternator field 
current if the bus voltage goes too high.  There is a feature that shuts off 
avionics power while you're cranking the engine.  There is a "soft start" 
feature for the landing light circuit that allegedly prolongs bulb life.  
There is a backup battery feature for those of you with electronic ignitions.

It comes with an optional indicator module that shows which polyswitches have 
"blown".  This indicator module contains a dimmer circuit for the panel 
lighting.

The drawback to this system is that you cannot "pull a circuit breaker", you 
can only turn off the switch for each circuit.  There's no need for the 
breakers, since wiring protection is provided by the polyswitches.

Much more data is available at www.controlvision.com

- Rob Wolf
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