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The induction of a DC motor while rotation lead to a non continuid current. This AC part of the DC csupply current is called ripple current. You can measure this and see if the motor is moving and also you can count the ripple per second and have the motor speed "RMS".
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What is the formula for ripple voltage in current?
V(ripple)= V(rms) / V (DC)
What is hunting in a DC motor?
when a dc motor armature current is fluctuated in a range then it is call hunting in a d.c motor.
What is the value of ripple in the ideal dc power supply?
In an ideal DC power supply, there is no ripple.
What are brushes with reference to DC motors?
Bushes, with reference to DC motors is a brushed DC motor which is a motor that designed to run from a direct current (DC) power source. This type of motor is an internally committed electric motor.
What is diode ripple?
In a switching DC-DC voltage converter, the oscillatory nature of the switching circuit generates a small "ripple" effect in the output voltage which is supposed to be minimized via careful design of the overall circuit. The output current of this type of converter typically flows through a diode into the rest of the system. The voltage measured at the cathode of this diode will exhibit the aforementioned ripple.
What is the formula for ripple voltage in current?
V(ripple)= V(rms) / V (DC)
How do you calculate DC link capacitors?
Its a very difficult subject to which most of my fellow designers estimate the ripple current in the caps and then select capacitors that can handle that current. The idea of voltage droop om most DC links can be forgotten because of other compensators such as a lower BEMF motor. The problem is to get as much life out of the caps as you can and that's to keep them cool as you can. Assume that every amp delivered from the DC like is an amp of ripple current and you should be OK.
How do you convert an RMS current value to a DC value?
RMS current is converted to DC current by using a rectifier. Capacitors and other components are used to make a cleaner DC output with less ripple.
What is the effect of field current on dc motor?
The field current of a dc motor provides the magnetic field that allows the motor to develop a torque when current flows through the armature..
Why current is supplied to DC motor?
Current is supplied to a DC motor to create a magnetic field that interacts with the stationary magnetic field in the motor, resulting in a force that causes the motor to rotate. The current flowing through the motor's coils generates the electromagnetic force necessary for the motor to convert electrical energy into mechanical energy.
What can change an ac current to a DC current?
rectifierac motor - dc generator set
What type of device runs on DC current?
dc motor
What is hunting in a DC motor?
when a dc motor armature current is fluctuated in a range then it is call hunting in a d.c motor.
What is the value of ripple in the ideal dc power supply?
In an ideal DC power supply, there is no ripple.
What is DC motor?
A DC motor is an electric motor that runs on direct current (DC) electricity. A DC motor is designed to run on DC electric power. Two examples of pure DC designs are Michael Faraday's homopolar motor (which is uncommon), and the ball bearing motor, which is (so far) a novelty. By far the most common DC motor types are the brushed and brushless types, which use internal and external commutation respectively to reverse the current in the windings in synchronism with rotation.
What is AC motor and DC motor?
AC stands for alternating current, and DC is direct current. A motor is a device that uses electrical energy to spin. An AC motor uses AC voltage, and a DC motor uses DC voltage. http://ezinearticles.com/?The-Difference-Between-AC-and-DC-Electric-Motors&id=193767
Can a dc motor works in ac current?
no
