Patent
Stabilized voltage regulator circuit, particularly for use with a serially connected PNP transistor
TLDR
In this article, a control loop consisting of a serially connected PNP transistor, a reference voltage generator, a voltage divider, and a comparator-amplifier is used to provide an error control signal.Abstract:
To permit low differences between regulated output voltage and unregulated input voltage, for example in the order of only 200mV, a control loop formed of a serially connected PNP transistor 11, a reference voltage generator 15, a voltage divider 13 connected across the regulated output, and a comparator-amplifier 14 comparing the output taken from the voltage divider 13 and the reference and providing an error control signal has a second control loop connected thereto which includes a transistor and a current sensing resistor connected to the base of the control transistor 11 and a second comparator comparing the actual current flow through the transistor 18 and the error signal to stabilize the control transistor. A switching network 16 can be additionally connected to modify or affect the error signal applied to the second control loop.read more
Citations
More filters
Patent
Switching voltage regulator circuit
TL;DR: An integrated circuit for use in implementing a switching voltage regulator, the integrated circuit including a power switching transistor, driver circuitry and control circuitry, which is operable in a normal feedback mode or an isolated flyback mode.
Patent
Series pass voltage regulator with overcurrent protection
TL;DR: In this article, a series pass voltage regulator compares the output voltage with a reference voltage and adjusts the base bias of a PNP series pass transistor coupled between an unregulated voltage source and a load to maintain a predetermined constant value.
Patent
Voltage controlled and current limited power supply
TL;DR: In this paper, a voltage control and current regulation system with a small number of elements and a sufficient dynamic control range is presented, where the output of the second control amplifier is connected to a second electrode emitter of the control transistor so that, the controller transistor operates in emitter arrangement during active voltage regulation and operates in base arrangement during current limitation.
Patent
Field device for process instrumentation
TL;DR: In this paper, a measuring transducer for process instrumentation is described, in which a two-wire line can be connected for transmitting an analogue output signal, and the output circuit contains a controller with an actuator connected downstream for the output signal.
Patent
Lossless overcurrent sensing circuit for voltage regulator
TL;DR: An overcurrent sensing circuit for use with a voltage regulator, such as a linear post regulator for a power supply, utilizes a field effect transistor (FET) both as the pass element for the voltage regulator and as a current sense resistor as mentioned in this paper.
References
More filters
Patent
D.c.-fed two stage regulated direct-current supply system
TL;DR: In this article, a DC supply system which is suitable as a DC voltage source for a DC to AC inverter is presented, where two stage regulator means are provided for intermittently actuating a semiconductor switch.
Patent
Base drive regulator
TL;DR: In this article, a base drive regulator for regulating the base drive voltage of the output transistor of a switching amplifier is proposed, where the inputs of a comparator are separately connected to a reference voltage of either an independent source or the base of an output transistor and to a resistor network connected between the collector and emitter of the transistor.
Patent
DC-voltage supply means for an inverter
TL;DR: In this article, a control circuit for controlling a supply of D.C. voltage to the input of an inverter is presented, which includes a control arrangement and apparatus for adjusting the voltage supply in accordance with signals applied to the control arrangement.
Patent
Device for voltage regulation of a solar generator
TL;DR: In this paper, a single generator is permanently coupled to the bus bar which generator is regulated to provide improved overall regulation, and a series regulator having high feedback loop gain for substantially reducing the output impedance of the single regulated generator in comparison to the unregulated generators.
Patent
Constant current base-drive circuit
TL;DR: In this paper, a control circuit for compensating for the change in drive current in a pe-width modulated control circuit of a power supply is presented, where three input NOR gates are controlled by applying an analog voltage proportional to the charge in drive currents to the third input.