Subject: flap actuator
From: Paul
Date: 3/9/2001, 8:49 AM


Neal Scherm wrote:

Here is the flap circut from Chuck Dunlaps RV6. I added up and down
limit
switches, but it is the simplest circut I've found. The diodes across
the
relay coils absorb the inductive spike and extend the life of the
switches.

Thanks again Chuck,
Neal


The limit switches won't work with this circuit. Once they open, the
motor
cannot be actuated again unless the limit switches are shorted. My
circuit
works with Van's motor because it free runs at the end of its travel
without
hurting anything, so it doesn't need limit switches. If you have a
mechanism
that would bind at end-of-travel, you will need limit switches and a
different (more complex) circuit.

Chuck Dunlap


 Chuck, I don't see why the NC limit switch on the "UP" circut being open
would keep the NC  "DOWN" circut from working. or vica versa, and as soon as
you close the up circut again by lowering the flaps, both will be available.
Am I wrong in this?
Neal


 
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