Datasheet Summary
Zero-Voltage Switch with adjustable Ramp
Description
The integrated circuit, U217B, is designed as a zerovoltage switch in bipolar technology. It is used to control resistive loads at mains by a triac in zero-crossing mode.
A ramp generator allows power control function by period group control, whereas full-wave logic guarantees that full mains cycles are used for load switching.
Features
D Direct supply from the mains
D Current consumption ≤ 0.5 mA
D Very few external ponents
D Full-wave drive
- no DC current ponent in the load circuit
D Negative output current pulse typ. 100 mA
- short-circuit protected
D Simple power control D Ramp generator D Reference voltage
Applicatio...
