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AlfaSpid Rotator www.alfaradio.ca Page 18
Page 18 of 21 Alfa Radio Ltd. 11211 - 154 St. Edmonton, Alberta, Canada T5M 1X8 780 466 5779
Relays chosen should be suitable for the proper coil voltage as well as
appropriate current carrying capability. A relay capable of 5 to 10 amps DC is
adequate. The diode in series with Relay K1 is any general purpose 1 amp style
such as the 1N400x series. If the motor rotates incorrectly, simply reverse the
leads to the motor or from the External DC Supply.
The controller also has the capability to, with a small modification, allow
you to input your external DC voltage into the unit and use the internal relays to
control the rotator as usual.
This information is presented as a guide to help the user realize a solution
to the long cable run situation.
If you do not feel comfortable wiring basic circuitry to do this, please
contact Alfa Radio Ltd. (www.alfaradio.ca) for a pre-wired solution.
Prepared for Alfa Radio Ltd by VE6JY Don Moman Dec 6/2001