Thats a good idea. Also consider if the timer reverses the motor it
could also control a polarity sensitive latching relay or a common dual
coil latching relay with steering diodes.
I have used Melnors in the past for watering, they tend to short out
internally due to moisture. I kept Melnor busy warranteeing those
things. Of course for this purpose it would be ideal. I had ones with a
7 day schedule. Pretty neat...when they worked!
Joe
Harvey Babb wrote:
I've got one of these that runs the motor one way for "on" and the
other way for "off". Add a microswitch that follows the valve position
and you've got it! The timer in question runs off 2 "C" cells and is
programmable for "time on" and "duration". Made by Melnor (sp?), large
distributor of lawn/garden accessories. Probably available from others.
Much Luck!
**THE-RFI-EMI-GUY** wrote:
Check the hardware store for electronic watering timers. There are
some that work from AA batteries. Hack it open, replace the motor
with a relay. You will probably need a latching relay arrangement or
be otherwise creative as the timer runs the motor for a few seconds
open and closed.
J999w wrote:
I'm looking for ideas for a stand alone timer to turn on and off a
remote
shortwave or BCB receiver and tape recorder. No AC mains available.
Switching
requirements no more than about 5 amps.
Haven't had much luck scouring the web.
Ideas?
John WB9UAI
--
Joe Leikhim K4SAT
"Jazz is not dead. It just smells funny." -F.Z.
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