101-1017 Rabbit Semiconductor, 101-1017 Datasheet - Page 140

• Manufacturer Part Number: 101-1017
• Description: KIT DEV POWERCORE 3800 INT'L
• Manufacturer: Rabbit Semiconductor
• Series: PowerCore FLEXr
• Type: MPU Moduler

Specifications of 101-1017

• Contents: RabbitCore Module, Dev. Board, AC Adapter, Cable and Dynamic C® CD-Rom
• Processor To Be Evaluated: PowerCore 38xx
• Interface Type: Ethernet
• For Use With/related Products: RCM3800
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Since the triacs automatically turn themselves off at each zero crossing, power can be
applied just after a zero crossing for full power to the other device, or most of the way
between zero crossings for minimum power to the other device, or anywhere across the
wave phase.
132
The zero-crossover interrupt circuit on
the PowerCore module, shown below in
Figure B-7, allows the turning on of the
triac output to be synchronized with the
AC waveform. An interrupt is sent to the
microprocessor when the AC voltage
crosses zero—this allows the software to
respond to the event. The triac output is
turned off automatically at the next
crossover after the gate is disabled.
Figure B-7. PowerCore Crossover Detection Circuit
W
W
W
W
W
PowerCore FLEX