Intermittent wiper controller
Figure1. Intermittent wiper controller.
The intermittent wiper circuit shown above causes the auto's windshield wipers to wipe once every several seconds instead of constantly wiping. The circuit may be added to older cars to provide the intermittent function or it may be used to replace broken wiper circuits in modern cars. The delay is continuously adjustable with the potentiometer but switch selected fixed resistors may also be used, if desired. The circuit should be connected to +12 volts at the same point as the original wiper power switch so that the proper fuse protection is preserved. The 12 volt relay should have contacts rated for a few amps since the wiper motor will draw a considerable start current but most automotive relays are adequate. The circuit should be quite trouble-free and will work on the first try if no wiring errors are made!
Title: Intermittent wiper controller
electronic circuit
Source: http://www.wenzel.com
Published on: 2005-08-15
Reads: 2055
Print version: 
Other electronic circuits and schematics from Automotive
-
Capacitor Discharge Ignition Circuit (CDI)
-
Charge Monitor for 12V lead acid battery
-
Wiper Speed Control
-
Headlights Timer
-
Headlight Flasher
-
Ultrasonic Parking Sonar
-
Car Battery Charger
-
Automatic Headlight Brightness Switch
-
Nite Rider Lights
-
Simple but reliable car battery tester