I will introduce the constant speed controller for
DC motor. It detects and controls the
rotational speed of the motor. When lower than the specification
speed, it increases a control electric current. When higher than the
specification speed, it reduces a control electric current. It is
possible to use when wanting to keep constant speed even if the load
to the motor changes. With the circuit this
time, I used a motor for the speed detection apart from the main
unit motor. The speed can be detected in the other way, too. LEDs
are lit up to confirm the control situation of the
motor. A circuit like "Light
controller" is used for the control unit of
this circuit. |