WELCOME To PROJECT CIRCUIT DESIGN

Search

Isnin, Jun 03, 2013

DC Speed Controller Motor

DC Motor Speed Controller

This circuit takes advantage of the voltage drop across bridge rectifier diodes to produce a 5-position variable voltage supply to a DC fan or other small DC motor. It is not as efficient as a switch-mode circuit but it has the virtues of simplicity and no switching hash. The four full-wave bridges are connected so that each has two pairs of series diodes in parallel, giving a voltage drop of about 1.4V, depending on the load current.

Circuit diagram:
DC motor speed controller circuit schematic
DC Motor Speed Controller Circuit Diagram

The rotary switch should have "make before break" contacts which should be rated to take currents up to about an amp or so. For higher currents, higher rated bridge rectifiers and a suitably rugged rotary switch (or solenoids) will be required. If you want smaller voltage steps, you could use the commoned AC inputs on the bridge rectifiers to give intermediate steps on the speed switch.
Author: Stephen Butcher

Tiada ulasan:

Catat Ulasan

Popular Project

Another Project Blog

Project From Diff Blogger

Links

How to Find the other Websites of a Person?


DomainTools

Whois Source Logo



BetterWhois.com: Search ALL Domain Registrars

Webcams.travel - The Webcam Community - Home




Terdapat ralat dalam alat ini

Web_Cams_Travel