Microchip Technology Inc

Zero Cross Detect

The ZCD module detects when an AC signal crosses through the ground potential. The ZCD module is useful when monitoring an AC waveform for, but not limited to, the following purposes.

Available Features:

  • Simplified TRIAC control
  • Dimmer phase delayed drive
  • AC period measurement
  • Minimized EMI caused by switching transients
  • Accurate long term time reference
Zero Cross Detect Info Configuration
Tabs / ZCD


Title Date Published Size D/L
TB3138 (DS-90003138) — Zero-Cross Detection Module Technical Brief 09/11/13 230 KB PDF

8-Bit Video Channel