Transformer Emf Equation Ppt . The constant “k” is known as voltage transformation ratio. Circuits are separated, as depicted in figure 2, the steady state loop equations are simply: PPT Transformers PowerPoint Presentation, free download from www.slideserve.com Delivery of a good speech along with the given slides would make the greatest of combination. Construction, types of transformers, emf equation, concept of leakage flux and leakage reactance, operation of transformer under no load and on load, phasor diagrams, equivalent circuit, efficiency, regulation and all day efficiency; The main principle of the emf equation of transformer is presented below.
Voltage Regulator Current Source. Figure 1 shows the schematic symbol for an ideal current source driving a resistive load. A current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it.
LM317 Voltage Regulator circuit Simple Electronics Projects from easyelectronicsproject.com
A current source is the dual of a voltage source. Possibly a bad choice of words, but that's what i read. The current source will source current to the load to ground which allows support for different kind of applications.
The Circuit Designed In This Project Can Be Adjusted To Provide A Constant Current Up To 1.5 A.
The current source inverters may become direct competitors of the voltage source inverters thanks to the voltage control techniques. But note that the minimum operating voltage drop would still be about 1v. You can use this current regulator calculator to vary the value of the program resistor (r 1) and calculate the output current from the lm317 / lm338 / lm350 family of three terminal adjustable regulators.
The Current At The Output Is Limited To 25 Ma By A Series Resistance Of 50 Ohms At The Output Terminals Of The Circuit.
Possibly a bad choice of words, but that's what i read. This circuit produces a regulated current in a load, the range of which is determined by the tap chosen. The only disadvantage is that the voltage drop across the shunt resistor (r2 in your schematic) will be higher.
In A Voltage Regulator, You Turn A Pot To Adjust The Output Voltage E, And The Impedance Of The Load R (What The Supply Is Connected To) Determines What The Current I Is (Ohms Law:
A current regulator is no different from a voltage regulator, in that it must have enough 'spare' voltage to allow it to function properly. Actually a current source is usually a current regulator. Here is the circuit to create a current regulator with the lm117.
You'll Get A Voltage Regulator With The Reference Voltage As Output (If This Doesn't Trigger Emergency Shutdown Anyways).
When the voltage regulator is working, the current that passes through the load, also passes through the resistor r. Maximum waste is 1.2v 5 ohm = 300mw, not too bad. Here is a link to the datasheet.
The Circuit Inputs Ac Voltage From Main Supplies And Regulate It Using Lm317 Voltage Regulator Ic.
The term current sink is sometimes used for sources fed from a negative voltage supply. While designed as a variable voltage regulator, it will double as a stable constant current source. The voltage control loop is disabled so that the current control loop provides regulation.
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