What about MOV's? Typical
transient response time measured in nanoseconds...
<Marv>
"Steven Boese" <
sboese@uwyo.edu> wrote:
Ed and
Joe,
The diode in the EC2 allows the current from the collapse of
the
injector magnetic field to flow to the positive supply rail (~14V);
it
doesn't oppose this. A resistor allowing this current to flow
would
also result in a close delay since the current flowing is what
maintains
the magnetic field during this delay. What is needed is a way
to
decrease the rate of voltage rise just after the EC2 pulse ends
so
arcing in the A/B selection relay is suppressed. After the
relay
contacts open enough that an arc is no longer possible (which
shouldn't
take long) an open circuit condition now would allow the injector
to
close quickly. The arcing may or may not be a problem any given tim
Ed