A - Human Necessities – 01 – J
Patent
A - Human Necessities
01
J
A01J 5/007 (2006.01) A01J 5/14 (2006.01)
Patent
CA 2159298
A milking machine pulsation control includes a microcontroller which generates a pulse width modulated drive signal to control current to pulsator valves, with a high current for pull-in and a lower current for holding. The pulse width modulated drive signal is based on line voltage and compensated for supply frequency. A zero crossing circuit controls internal switching at zero volts to reduce noise. A watchdog circuit resets the computer in the event of latch-up as a result of circuit transients. An over-current shut- down circuit the switches that operate the valve. Synchronism is provided with other pulsation controls. Operator input switches and visual displays are multiplexed to the microcontroller.
Babson Bros. Co.
Finlayson & Singlehurst
Gea Westfaliasurge Inc.
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