Datasheet Summary
U217B/ U217B-FP
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 to realize 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...
