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Electrical and Wave

Controllable-compound-voltage-DC-AC-transforming-circuit

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Controllable compound voltage DC/AC transforming circuit

Details

Inventors: Yang, Tai-Her;
Assignee:
Primary Examiner: Sterrett; Jeffrey L.
Assistant Examiner:
Attorney, Agent or Firm: Bloom; Leonard

In a controllable compound voltage high-efficiency DC/AC transforming circuit, including a plurality of identical battery units which are arranged in parallel and/or serial arrangement to provide a step output voltage, an improvement comprising a bridge type solid state switch circuit for the output voltage polarity exchange and AC frequency control. The bridge type solid state switch circuit is controlled by a central control unit.

DETAILED DESCRIPTION It is, therefore, an object of the present invention to provide a controllable compound voltage high-efficiency DC/AC transforming circuit having a step voltage output and linear voltage output, both low ripple voltage outputs.
It is another object of the present invention to provide a power supply with polarity exchange function and AC frequency control.
According to the present invention, a controllable compound voltage DC/AC transforming circuit comprises at least six substantially identical battery units, which are interconnected by a central control unit for connecting the battery units in a series and parallel arrangement for providing an output voltage on a pair of output terminals having a required load in a wide range of output voltages.
The output terminals include positive and negative output terminals.
Each battery unit has respective positive and negative terminals and a terminal voltage.
Said circuit further comprises five switch units, a first switch unit between the negative terminal of the first unit battery unit and the positive terminal of the second battery unit, a second switch unit between the negative terminal of the second battery unit and the positive terminal of the third battery unit, a third switch unit between the negative terminal of the third battery unit and the positive terminal of the fourth battery unit, a fourth switch unit between the negative terminal of the fourth battery unit and the positive terminal of the fifth battery unit, and a fifth switch between the negative terminal of the fifth battery unit and the positive terminal of the fifth battery unit.
Each switch unit has one of a normal position and an actuated position.
At least one of said five switch units is actuated by the central control unit in order to provide a respective serial and/or parallel connection between said battery units.
Five pairs of diodes (each of the diodes has respective positive and negative terminals), each is connected to each of said five switch units

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