Electronic power supply voltage stabilizer

Abstract

The voltage stabilizer includes following parts: an input end including first end and second end, a output end including first end and second end, a switch button, a capacitance, an inductance and a electric energy transducer. The switch button is connected between the input end and AC power supply. One end of the capacitance is connected to first end of the input end, and the other end of the capacitance is connected to first end of the output end electrically. One end of the inductance is connected to first end of the input end. The electric energy transducer includes an electrical storage device. The first end of electrical storage device is connected to an end of the inductance, and the second end of the electrical storage device is connected to the first end of the output end. When AC power supply is abnormal, the electric energy transducer converts electric energy stored in electrical storage device to output in order to stabilize the output voltage.

Description

technical field [0001] The invention provides a voltage stabilizer for a power supply, especially a voltage stabilizer applied to an electronic power supply. Background technique [0002] Please refer to Figure 1(a), which is a circuit block diagram of a common isolated mechanical power regulator. As shown in FIG. 1( a ), the isolated mechanical power regulator 1 includes an isolated transformer 11 , a relay switch 12 and an input voltage detection circuit 13 . The isolated mechanical power supply regulator 1 uses the input voltage detection circuit 13 to detect an input voltage V in , according to the input voltage V in The input voltage detection circuit 13 sends a trigger signal to actuate the relay switch 12, and the relay switch 12 is used to change a coil turn ratio of the isolation transformer 11 to provide a stable output voltage V out . [0003] Please refer to Figure 1(b), a circuit block diagram of a common non-isolated mechanical power regulator. As shown in...

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Problems solved by technology

[0004] According to the above, these mechanical power supply regulators 1 and 2 all use coil turn ratio conversion to stabilize voltage, so this type of power supply regulator has the following disadvantages: (1) These mechanical power supply regulators The system response of the system is slow and its output voltage adjustment rate is high; (2) these mechanical power supply regulators need to use bulky transformers, resulting in low power density of these power supply regulators; and (3) these mechanical power supply The voltage borne by the primary coil of the voltage stabilizer transformer must be at the mains voltage level regardless of whether it is an isolated type or a non-isolated type

[0007] These electronic power supply regulators have the following disadvantages: (1) These electronic power supply regulators have a phase shift in the output and input voltage phases, and the phase shift is related to the load current condition of the device, so it is impossible to design these electronic power supply voltage regulators. An output and an input of the voltage regulator have a bypass path, causing the system reliability to drop; and (2) these electronic power regulators do not have a DC link connection path inside, and a battery pack cannot be added inside. Used as a backup power supply when the mains power is abnormal

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