CompletedIrrigation Step-Down
STDIrrigation Step-Down
License
：Public Domain
Description
Step down AC voltage from +27V to +24V. Line smoother to prevent ringing with AC Pump Start Relay.
A common issue with irrigation pump start relays being located too close to the controller which introduces EMI noise during initial 60A in-rush current that causes relays to quickly latch and unlatch. This should hopefully solve the issue by dropping the 27VAC+ source to 24VAC nominal with a voltage divider and smooth any AC line ringing with a heavy duty shunt resistor.
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