Posts Tagged ‘Motor Control’
We can use the circuit below to maintain the level of water in the header tank within prescribed limits. A 3HP submersible bore pump which has a high starting current is controlled by this circuit, necessitating a solid-state relay sufficient to take the starting load. The upper and lower water sensors in the tank are …
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DC drive for a Universal motor is shown in figure below. In order to supply DC current to the motor, a diode bridge has been added around the motor. The motor current freewheels through the diode bridge after the TRIAC current crosses zero.
To limit the rate of fall of the current as defined in the …
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To sense and control the current in stepping motors and other similar devices, we can use a linear integrated circuit like L6506.
The chip set forms a constant current drive for inductive loads and performs all the interface functions from the control logic through the power stage when used in conjunction with power stages like the …
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On the circuit diagram below show us a schematic which is used to set the speed of a low-power induction motor, such as those which can be found in fan applications.
Noise coming from TRIAC commutations can be filtered using capacitors C1, C2 and C4. C2 has to be from X2 technology, whereas C1 and C4 …
This diagram tells us about how to use L200 device for the speed control of permanent magnet motors.
By means of R1 and R2, we can obtain the desired speed, proportional to the voltage at the terminal of the motor.
Vm= Vref (1+R2/R1)
We can use this following equation to obtain better compensation of the internal motor resistance, …
This circuit is a L6208 stepper motor controller. To build this circuit, we can implement slow decay. It allows lower ripple, lower power dissipation and avoids voltages below GND at output pins during recirculation. Here is the circuit :
Using component values on the schematic diagram of the circuit, the duty-cycle of this circuit is 63%, …
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