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The line regulation for an unregulated power supply is usually very high for a majority of operations, but this can be improved by using a voltage regulator. A low line regulation is always preferred. In practice, a well regulated power supply should have a line regulation of at most 0.1%. [1]
The maximum dissipation in the foldback design is three times lower than in the constant current limited design. The prime purpose of foldback current limiting in linear power supplies is to keep the output transistor within its safe power dissipation limit. A linear regulator dissipates the difference between input and output voltages as heat.
Load regulation is the capability to maintain a constant voltage (or current) level on the output channel of a power supply despite changes in the supply's load (such as a change in resistance value connected across the supply output). [1] [2]
In power engineering, the power-flow study, or load-flow study, is a numerical analysis of the flow of electric power in an interconnected system. A power-flow study usually uses simplified notations such as a one-line diagram and per-unit system, and focuses on various aspects of AC power parameters, such as Voltage, voltage angles, real power and reactive power.
Operational Amplifier Power Supply Rejection Ratio (PSRR) and Supply Voltages by Analog Devices, Inc. Definition and measurement of PSRR. Application Note on PSRR Testing of Linear Voltage Regulators, by Florian Hämmerle (OMICRON Lab) and Steven Sandler (Picotest) Introduction to System Design Using Integrated Circuits, via Google Books
In a typical power supply/charger supplied with a laptop computer, average I CA is set at around 1.5 mA, including a 0.5 mA LED current and a 1 mA shunt current (2012 data). [7] Design of a robust, efficient and stable SMPS with a TL431 is a common but complex task. [34]
A regulated power supply is an embedded circuit; it converts unregulated AC (alternating current) into a constant DC. With the help of a rectifier it converts AC supply into DC. Its function is to supply a stable voltage (or less often current), to a circuit or device that must be operated within certain power supply limits.
The load line, usually a straight line, represents the response of the linear part of the circuit, connected to the nonlinear device in question. The points where the characteristic curve and the load line intersect are the possible operating point (s) ( Q points ) of the circuit; at these points the current and voltage parameters of both parts ...