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Positive and negative symmetrical output power source and medical device thereof

A positive and negative symmetrical, output power technology, applied in the direction of adjusting electrical variables, control/regulating systems, instruments, etc., can solve the problem that the symmetry of the output voltage cannot be adjusted automatically and accurately, and achieve accurate adjustment and symmetrical output voltage adjustment. sexual effect

Active Publication Date: 2015-06-24
EDAN INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a positive and negative symmetrical output power supply that can automatically and accurately adjust the output voltage symmetry and its medical equipment

Method used

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  • Positive and negative symmetrical output power source and medical device thereof
  • Positive and negative symmetrical output power source and medical device thereof
  • Positive and negative symmetrical output power source and medical device thereof

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Embodiment Construction

[0018] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, in the embodiment of the positive and negative symmetrical output power supply and its medical equipment of the present invention, the positive and negative symmetrical output power supply at least includes a first power module and a second power module, and these two power modules work separately and generate their own output The voltages are respectively output through the first voltage output terminal and the second voltage output terminal to provide power for the load. In this embodiment, ideally, the polarities of the voltages generated by the above two power modules are opposite, and their absolute values ​​are equal or in a set ratio; the first voltage output port is set on the first power module, and its Outputting the voltage generated by the first power module, the first power module also includes a first feed...

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Abstract

The invention relates to a positive and negative symmetrical output power source which comprises a first fixing feedback unit, a second fixing feedback unit and a second dynamic feedback unit. The first fixing feedback unit conducts sampling on the voltage value of the first voltage output end and feeds the voltage value back to the first feedback adjusting end. The second fixing feedback unit conducts sampling on the voltage value of the second voltage output end and feeds the voltage value back to the second feedback adjusting end. The second dynamic feedback unit feeds the difference value back to the second feedback adjusting end by obtaining the difference value of the superposed voltage value of the first voltage output end and the second voltage output end and the ground potential so that the voltage value of the first voltage output end and the voltage value of the second voltage output end can be made to be symmetrical. The invention further relates to a medical device. The positive and negative symmetrical output power source and the medical device have the following advantages that the symmetry of the output voltage can be adjusted automatically and precisely.

Description

technical field [0001] The invention relates to medical equipment, more specifically, to a positive and negative symmetrical output power supply and medical equipment thereof. Background technique [0002] Positive and negative symmetrical power supply (that is, the power supply has two sets of outputs, the voltage value of one set of outputs is positive, and the other set is negative; the absolute values ​​of the two sets of output voltages are equal or proportional) are widely used, especially high-precision The load of the measurement and control circuit has extremely high requirements on the symmetry of the positive and negative power supplies (that is, whether the absolute values ​​of the two sets of voltages are equal or whether they meet the specified ratio). There are many approaches to designing for positive and negative symmetric power supplies. Commonly used design methods include: using transformer coupling windings to generate positive and negative symmetrical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/56
Inventor 胡振营王贤江
Owner EDAN INSTR
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