Motor speed regulator with triac
This triac-based motor speed regulator is designed for controlling the speed of small household motors like drill machines. The speed of the motor can be controlled by changing the setting of P1. The setting of P1 determines the phase of the trigger pulse that fires the triac.
The circuit incorporates a self-stabilizing technique that maintains the speed of the motor even when it is loaded. For example, when the motor of the drill machine is slowed down by the resistance of the drilled object, the counter-EMF of the motor also decreases. This results to a voltage increase in R2-P1 and C3 causing the triac to be triggered earlier and the speed increases accordingly.
Motor speed regulator circuit schematic
Printed circuit board layout
Random schematics
If you enjoyed this post, please consider to leave a comment or subscribe to the feed and get future articles delivered to your feed reader.
Comments
No comments yet.
Leave a comment