Re: Relay Problem - Chattering

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>" <dhmccauley-at-spacecatlighting-dot-com>


Right now, the only thing operating in my box are this relay latch network
and a hefty cooling fan as I'm testing each circuit individually as i'm
building it.

It seems when the relay goes a' hunting, that it pulls the voltage down in
my whole control box (slowing the fan etc...)  Does this provide any
clues????

Dan




 > Hi All
 >
 > >   The main power relay in my power contoller seems to do
 > >the same thing.. sometime I'll energize it and it works
 > >just fine.. other times it's like it can't decide if it
 > >wants to close or not.. it's rated for 120VAC.. I haven't
 > >been able to figure it out either.. :-/
 >
 > FWIW, my experience with relay hunting/chatter has been when re-wiring a
 > LandRover (which didn't have such things in the original design).
 >
 > The hunting (more of a whistle than a chatter sometimes) occured when a
 > heavy load had dragged the battery voltage down.
 >
 > So - are those relays really getting enough 'juice'?  If the
 > hunting/chatter occurs often enough, why not put a voltmeter across the
 > relay solenoid and see if there is any change in the applied voltage
(power
 > fluctuations?) when the hunting occurs.
 >
 > Cheers
 >
 > M
 >
 > --
 > Matthew Smith
 > IT Consultant - KBC, South Australia
 >
 >
 >