Constant voltage vs constant current power supply? - constant current power supply
What are the differences between the voltage and constant current power source?
I really doubt about the constant power supply that I know that the current in a circuit depending on who is responsible, can vary. Can someone help me?
Saturday, January 23, 2010
Constant Current Power Supply Constant Voltage Vs Constant Current Power Supply?
6 comments:
The conditions are clear. The constant voltage may vary maintain a constant current independent of the load impedance. Constant voltage, maintaining a constant voltage independent of load current. If you have an energy source that would support an output of one volt, no matter what the charge, it could provide energy that the world needs, because in theory, provide the current necessary to maintain the production of one volt. Therefore, there are practical limits to the supply voltage and constant current is constant, its production steadily in a certain limit.
Each power supply can either be modeled as a source of voltage or current source Thevenin Norton.
Thevenin model of an ideal voltage source in series with a resistor. The resistance value depends on the physical design of the power supply. An ideal voltage source would have a resistance of 0 ohms in series. This means that is independent from the external load so that the voltage drop (current) * (0 ohms) = 0 voltage drop.
Of course, the real power supply with zero output resistance when the supply voltage depending on load. The higher the internal resistance (or impedance), the better the source.
A similar analysis can be done in the case of the current font.
Tension is a driving force and the current is a flow of electrons .. Voltage does not change to win regardless of the fee, but the current, which varies depending on load. I hope this helps COS properties that ..
A constant current power source is actually a regular supply with current limiter. It is used for devices that clung now even if you only put a burden in
In practice, such as high voltage supply will actually do to increase the voltage to a current, which vary define. For an ideal voltage power SUPLY indefinitely, as you increase the load resistance.
For a real power when it reaches its maximum voltage and then falling over.
Constant are less frequent.
joint request to use a constant current transformer, a series of lighting Drive
(In the past, for applications, arc and incandescent lamps used) These channels may provide more
Kilovolts or more, if the circuit is open. The lamps had devices in the circuit with each lamp
120 or 240 volts at the lamp normally would have no effect, but the opening of a thread
Because of the high voltage appears across the lamp. The device effectively short-circuiting the lamp,
Maintaining circuit continuity. This principle is in the Christmas decorations used day or 25 to 50 sets
connected low-voltage lamps have built in diversions will occur when full line voltage appears
Open the onion to keep the continuity of the circuit and should avoid the job search
Defective lamp
It is a frequently asked question relates to a DC motor. The current (or energy) is directly related to the work that he does not (on the engine power over time) in context. Stress, on the other hand, refers to the engine speed.
When an enormous burden is on a treadmill with a motor capable of lower power, and if the engine is by tension) required for maintaining this voltage (speed, even if you have a dangerous amount of band's target controlled current steps . We could try to do more work than it was designed to do. The engine is capable of burning CDs.
In addition, if the conveyor is controlled by the current load and no (or little work and little friction) of the conveyor belt speeds of up to a dangerous speed until the engine reaches the amperage specified.
In fact, the speed of the engine is often marked by feedback loops, the current May (amperage are controlled), voltage and / or a speedometer for speed. The teams and drivers have called the port and / or digital inputs and outputs. GE is in this area, Allen Bradley and RelianceElectric EG.
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