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Switching circuit, switching method and medical equipment

A switching circuit and switching technology, which are applied in the fields of medical equipment and switching circuits, can solve problems such as power consumption, and achieve the effects of reducing power consumption, improving stability and efficiency, and improving experience.

Active Publication Date: 2016-07-27
AMBULANC (SHENZHEN) TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because there is a leakage current from the drain to the source of the MOSFET itself, the MOSFET still has power dissipation in the off state.

Method used

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  • Switching circuit, switching method and medical equipment
  • Switching circuit, switching method and medical equipment
  • Switching circuit, switching method and medical equipment

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Embodiment Construction

[0043] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0044] Attached below Figure 2-8 The specific embodiment of the present invention will be described in detail.

[0045] Such as figure 2 As shown, a switch machine circuit includes: a latch relay circuit, a first MOSFET tube circuit and a second MOSFET tube circuit;

[0046] The first MOSFET tube circuit receives a first control level, the first M...

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Abstract

The invention discloses a switching circuit, a switching method and medical equipment, and the switching circuit comprises a latching relay circuit, a first MOSFET circuit and a second MOSFET circuit; the switching circuit realizes on and off of an electromagnetic coil in the latching relay through receiving a control level, the on and off of the electromagnetic coil in the latching relay can realize the switch of an switch of the latching relay between a normally open contact and a normally close contact, so that the on and off between a power supply and a load is realized; the control level has no need to be in a persistent state, the contactor state of the relay is maintained by the machine, and the power consumption is greatly reduced; According to the invention, a contact of the latching relay and a control coil are completely independent, the electric discharge range of an input power is not limited by a main loop, the stability and efficiency of the switching circuit are improved, battery life of battery power supply equipment is prolonged, and the user experience is improved.

Description

technical field [0001] The invention relates to the field of switch machine technology, in particular to a switch machine circuit, a switch machine method and medical equipment. Background technique [0002] The main circuit of the start-up circuit in existing medical equipment usually uses a MOSFET (Metal-Oxide Field-Effect Transistor) as a switch, and the system is switched on and off by controlling the MOSFET to be turned on and off. Since the MOSFET tube has internal resistance in the on state and static leakage current in the off state, and must run continuously when the host is turned on or off, the MOSFET switch itself needs to consume energy, so the power consumption of the MOSFET is very important for battery-powered equipment. Low power consumption is bad. In addition, since the gate-source turn-on voltage of commonly used MOSFETs is above 2.0V, and the lower the gate-source voltage, the smaller the conduction channel of the drain-source, and the larger the conduc...

Claims

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Application Information

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IPC IPC(8): H03K17/687
CPCH03K17/687
Inventor 朱胜清冯耿超
Owner AMBULANC (SHENZHEN) TECH CO LTD
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