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About cleggsan
Expertise
All technical areas of Electronics Engineering.

Experience
BSEE, MBA, Design, R&D, University Research.
Senior Life Member of IEEE. Life Fellow of AES.

Organizations
IEEE, Consumer Electronics Society, Audio Engineering Society.
Broad teaching experience; work experience mostly in consumer electronics and conversion from analog to digital technologies. Pioneer in digital audio at all levels.

You are here: Experts > Computing/Technology > Job Searching: Technical > Electrical Engineering > 12 vt. DC wiper motor from 110 vt. AC

Electrical Engineering - 12 vt. DC wiper motor from 110 vt. AC

Expert: cleggsan - 10/4/2009

Question

schematic

The motor speed needs to be variable. A schematic would be much appreciated.

Answer
ONE: From the looks of the transformer in your image it may not be sufficient (power) to drive the windshield wiper motor - - depends on how much load you are going to place on it.

TWO: There are a few ways to make it variable speed. One is to add an electronic motor control. Another would be to use a rheostat to the dc output of the inverter.

THREE: Here is schematic and construction of a unit with electronic regulator that will work.

http://www.epanorama.net/zen_schematics/Circuits/Power/vpsu.html

Use the heavy duty voltage regulator (7812).

Let me know if you need more.

C

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