Description

As a convenience feature of the windshield wiper intermittent and wipe/wash operation are implemented in most of the automobiles. The U642B controls all timing functions accurately at a reasonable price level. Interval pause and afterwiping time can be set to fixed values with the help of resistors in a broad time range. Added value can be provided with an individual, continuous adjust ment of the interval pause by a potentiometer which may be built into the stalk. For proper operation it is mandatory to feed the signal of the wiper motor‘s park switch into U642B.

Features

• Interval pause: 4 to 20 s

• Afterwiping time: 2 to 20 s

• Wiper motor’s park switch

• Wipe/wash mode priority

• One external capacitor, determines all time sequences

• Relay driver with Z-diode

• Interference protection according to VDE 0839 or ISO/TR 7637/1

• Load-dump protected