Magnetic amplifier post regulator

It consists of an iron core with two or more coils wound around it. Current control is achieved by varying the magnetic flux in the cores using the appropriate DC current through the control winding. The static device has no moving parts, no wear mechanism and has good mechanical and vibration tolerance. In addition it requires no warm up time and can withstand momentary overloads better than the solid state devices. They are used in power supplies, in measurement systems, in nuclear power applications amongst other uses.

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Content:

• File:Magnetic amplifier regulator.png
• Mag Amp, the use of magnetic amplifiers to regulate forward converter output(s).
• UC2838A Controller. Datasheet pdf. Equivalent
• Voltage regulator
• Magnetic Amplifiers Working Principles and Applications
• Magnetic Amplifiers for Voltage Regulation Applications
• Article Info.
• Unregulated transistor inverter for high-frequency magamp power converters
• Magnetic Amplifier Controller
• US6449175B1 - Switched magamp post regulator - Google Patents

WATCH RELATED VIDEO: Magnetic Amplifier

File:Magnetic amplifier regulator.png

UCA Datasheet. Magnetic Amplifier Controller. Operational Amplifiers. The UCA family of magnetic amplifier controllers contains the circuitry to gen-. This source will provide the reset current necessary. By controlling the reset current to a magnetic amplifier, this device will define the. Magnetic amplifiers are ideal for post-regulators for multi-.

With a square or pulse-width-modulated input voltage, a. With the UCA, only the magnetic ampli-. The UCA contains a precision 2.

Surface mount versions are also available. VCC VREF 9. Supply Voltage, V CC. Magnetic Amp. Source Voltage, V M. Reset Output Voltage, V R. Amplifier Input Range. Q, N, DP Package. J, L Package. Operating Temperature Range. Storage Temperature Range. Lead Temperature Soldering, 10 sec. Note: All voltages are with respect to ground pins. All currents. Consult Packaging. Gnd 4. Gnd 5. Ceramic Dip. Power SOIC. Plastic Dip. Note: All four ground pins must be connected to a common.

Q, L Packages. V REF. Reference Section. Supply Current. Reference Output. Line Regulation. Load Regulation. Short Circuit Current. Over Operating Temp. Amplifier Section Each Amplifier.

Offset Voltage. Input Bias Current. Input Offset Current. Minimum Output Swing. Output Sink Current. Output Source Current. A VOL. C MRR. P SRR. Reset Drive Section. Input Leakage. Output Leakage. Input Current. Maximum Reset Current. Download UCA Datasheet. UCA; g error signal along with a high voltage -compliant current source.

This source will provide the reset current necessar y to enable a magnetic amplifier to reg ulate and control a power supply output in the range of 2A to 20A. By controll ing the reset current to a magnetic amp lifier, this device will define the amo unt of volt-seconds the magnetic amplif ier will block bef. With a square or pulse-width-mod ulated input voltage, a magnetic amplif ier will block a portion of this input waveform, allowing just enough to pass to provide a regul. With the UCA, only the magnetic amplifier coil, three diodes, and an output L-C filter are necessary to implement a complete closed-loop reg ulator.

The UCA contains a precisio n 2. This source will provide the reset current necessary to enable a magnetic amplifier to regulate and control a power supply output in the range of 2A to 20A. By controlling the reset current to a magnetic amplifier, this device will define the amount of volt-seconds the magnetic amplifier will block before switching to the conducting state.

With a square or pulse-width-modulated input voltage, a magnetic amplifier will block a portion of this input waveform, allowing just enough to pass to provide a regulated output. With the UCA, only the magnetic ampli- fier coil, three diodes, and an output L-C filter are necessary to implement a com- plete closed-loop regulator.

All currents are positive into the specified terminal. Consult Packaging section of Databook for thermal limitations and considerations of package.

Mag Amp, the use of magnetic amplifiers to regulate forward converter output(s).

Effective date : Year of fee payment : 4. Year of fee payment : 8. Year of fee payment : A circuit and method provides a regulated dc—dc power conversion. Active switches, saturable core inductors, and a diode are used in a quasi-synchronous circuit.

UC2838A Controller. Datasheet pdf. Equivalent

An improved half-bridge LLC converter with a magamp auxiliary post-regulator is proposed in this paper. The function of the magamp is bypassed when the converter works within the low input-voltage range. Meanwhile, it operates as an auxiliary post-regulator when the input voltage is high. By changing the blocking time of the magamp, the dc gain of the converter can be extended. Hence, the input voltage range of the converter is extended. The realization of proposed topology does not require a complicated circuit. The controller of the magamp can be easily implemented using only passive components, transistors and an OP amp.

Voltage regulator

Magnetic amplifiers are ideal for post-regulators for multiple-output. Supply Voltage, V CC. Magnetic Amp. Source Voltage, V M. Reset Output Voltage, V R.

Magnetic Amplifiers Working Principles and Applications

Brkovic, Milivoje Slobodan Switching converters with magnetic amplifiers as controllable switches : I: Soft-switching converters. II: Input current shaping. Dissertation Ph. Part I: Novel soft-switching converters combine the functions of loss-less soft-switching for all switches and secondary side output voltage regulation at constant switching frequency. This was made possible by using magnetic amplifiers in series with the rectifier diodes in the symmetrical topologies. All three soft-switching topologies, half-bridge, full-bridge and push-pull, are analyzed.

Magnetic Amplifiers for Voltage Regulation Applications

Effective date : A switched magamp post regulator in a power converter incorporating a switched set mode control circuit which minimizes the power loss associated with the control transistor of a set mode magamp post regulator is disclosed. Power loss in set mode is minimized by switching the control transistor on and off synchronously with the main transformer. The incorporation of set mode and switching allows the use of less expensive ferrite core materials with increased efficiency for operation at higher frequencies and higher temperatures. The magamp post regulator is a popular power supply topology for regulating the outputs of a power converter in many applications.

Article Info.

Effective date : Year of fee payment : 4. Year of fee payment : 8.

Unregulated transistor inverter for high-frequency magamp power converters

RELATED VIDEO: MAGNETIC AMPLIFIER ITS PRINCIPLE, OPERATION AND USES

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Magnetic Amplifier Controller

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US6449175B1 - Switched magamp post regulator - Google Patents

Magnetic amplifier post regulator 54 includes magnetic amplifier 42 that has a main magnetic amplifier winding, reset transistor 76 , error amplifier 58 , and auxiliary magnetic amplifier winding Auxiliary output circuit 14 uses the magnetic amplifier 42 output voltage v2 to produce the desired auxiliary Auxiliary output circuit 14 uses the magnetic amplifier 42 output voltage v2 to produce the desired auxiliary output voltage VOS.