intermitten ww controlls

There is a valid patent on intermittent wipe, so you should be able to get some idea from that.

More to the point these days it is done in software I think, so there are no interesting details.

Cheers

Greg Locock

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.

barrytom, I would guess that the earlier ones would use a timer circuit. Wouldnt be too hard to cobble one up using maybe a 555 IC. you could make it variable with a little more imagination. .

Ken

If you play with your wipers you will notice that when you turn the wiper switch on they start to sweep and if you switch off the wiper switch before they reach the end of their cycle they will self park. There is a switch track inside the wiper motor which provides this function.

An intermittent wiper circuit turns on the wiper (in parallel) with the wiper switch and then turns off before the end of the cycle. There are lots of circuits to do this using everything from 555 timer, microcontrollers to simple RC timing circuits, generally all have some variable timing. They use things such as relays or SCRs as the switch.

regards
Pete