TWM500588U - Power adjustment circuit of electrotherapy machine - Google Patents

Description

Electric power adjustment circuit

This creation is about a power adjustment circuit, and more particularly to a power adjustment circuit for an electrotherapy machine.

Low-power output drivers are commonly used on instruments with low power requirements, such as electrotherapy, cosmetic electrotherapy, and more. In addition, traditional acupuncture, massage and other methods of stimulating the acupoints of the human body to achieve therapeutic effects, with the advancement and development of science and technology, an electrotherapy machine that can achieve the same therapeutic effect by stimulating the body's acupoints by output voltage is developed. Come out to provide users with different choices.

Electrotherapy machines can be divided into three types: low frequency (below 1 kHz), intermediate frequency (1 kHz to 100 kHz), and high frequency (above 100 kHz). Commonly used in the market are low-frequency and medium-frequency electrotherapy machines, such as: Transcutaneous Electrical Nerve Stimulation (TENS), Electrical Muscle Stimulation (EMS); Intermediate frequency such as: Vector Interference Electrotherapy, medium Frequency modulation electrotherapy machine, etc. The electrotherapy machine introduces the output signal into the human body through the human skin.

The conventional electrotherapy machine adjusts the pulse strength (voltage) directly from the variable resistor formed by the switch unit itself, which is often difficult to achieve when the electrotherapy machine needs to be slightly changed, thereby making it difficult for the user to adjust. To the appropriate degree of electrical stimulation (ie, the magnitude of the voltage), this shortcoming is a need for improvement in today's electrotherapy machines.

One of the aims of this creation is to enable the electrotherapy machine to make finer and more precise voltage adjustments.

For the above purposes and other purposes, the present invention provides a power adjustment circuit for an electrotherapy machine, which provides a control signal to a switching unit of an output driver such that a voltage provided by a power supply connected to the output driver The source can generate an output voltage via the output driver, and the output voltage is transmitted to an electrode slice group connected to the output driver to generate an output of the electrotherapy machine, wherein the power adjustment circuit includes a signal generator And an output strong and weak preamble, the signal generator is configured to output a rated voltage to generate the control signal through the modulation of the output strong and weak preamble, the output strong preamble comprises: a first order adjustment unit, is received The rated voltage is to provide a first stage voltage adjustment by an internal variable resistor and generate an output; and a second order adjustment unit is connected to the first order adjustment unit to receive the output thereof, and is provided by an internal variable resistor The second stage of voltage regulation and produces an output to the corresponding output driver.

In an embodiment of the present invention, the second stage adjustment unit is further included, and the second order adjustment unit is connected to the first order adjustment unit to receive the output thereof.

In an embodiment of the present invention, the first-order adjustment unit and the second-order adjustment unit are each a knob device for adjusting the internal variable resistance through the rotation of the knob.

Thereby, through the power adjustment circuit of the electrotherapy machine of the present invention, two-stage resistance value control can be performed, so that the electrotherapy machine can achieve more voltage control under the operation control of the knob type (adjusting variable resistance), and then provide The user has a more accurate output voltage.

In order to fully understand the purpose, features and effects of this creation, the following specific examples, together with the attached drawings, provide a detailed description of the creation, as explained below:

First, please refer to FIG. 1 , which is a block diagram of a circuit configuration of an electrotherapy machine, comprising: a signal control processing module 100 , an output driver 200 , a power supply 300 , and an electrode set 400 , which are processed by the signal as a power adjustment circuit. The module 100 provides a control signal S to the switching unit in the output driver 200, so that the voltage source P provided by the power supply 300 connected to the output driver 200 can generate an output voltage via the switching action of the output driver 200. O, the output voltage O is transmitted to the electrode sheet set 400 connected to the output driver 200 to form a continuous frequency-changing output, the electrode sheet set 400 having an electrode sheet attached to the skin of the user to make the output An electrotherapy effect is formed for the user.

Next, please refer to FIG. 2 , which is a schematic diagram of a circuit configuration of a power supply device output strength weak guide (OVL) in an embodiment of the present invention.

The signal control processing module 100 includes a signal generator 110 and an output strong and weak preamble 120. The signal generator 110 is configured to output a rated voltage V _DD (for example, 5 V) for the output strength indicator 120 to be modulated. The output strength leader 120 may include: a first order adjustment unit 121 and a plurality of second order adjustment units 122.

The first order adjustment unit 121 receives the rated voltage V _DD to provide a voltage adjustment of the first stage and generate an output by an internal variable resistor. The second-order adjustment units 122 are all connected to the first-order adjustment unit 121 to receive the output thereof, and each of the second-order adjustment units 122 provides the second-stage voltage adjustment by the internal variable resistor and generates an output corresponding to the corresponding The output driver 200 is output.

Next, please refer to FIG. 3 , which is a schematic diagram of a circuit configuration of a power supply appliance output strength weak guide (OVL) in another embodiment of the present invention. In this embodiment, the output driver 200 of the power supply 300 is supplied with a single channel as an example. Similarly, the rated voltage V _{DD is} received through the first-order adjusting unit 121 to provide the first-stage voltage by the internal variable resistor. Adjust and produce output. Then, the second-order adjustment unit 122 can further perform the next-order adjustment, and the next-order is a finer resistance adjustment under the combination with the previous stage. The second-order adjusting unit 122 is connected to the first-order adjusting unit 121 to receive the output thereof, and the second-order adjusting unit 122 also provides the second-stage voltage adjustment by the internal variable resistor and generates an output corresponding to the output. Driver 200.

For example, in the output driver 200, the voltage source P provided by the power supply 300 is an output of the output driver 200 and is connected to one end of the input side of one of the transforming units 410 of the electrode set 400. The other end of the input side of the transforming unit 410 of the electrode set 400 is connected to the output of the signal control processing module 100. The output driver 200 controls the internal switching action by the control signal S, thereby The input of the voltage source P to the input side of the transforming unit 410 and the input mode (for example, by means of pulse width modulation) are controlled by the operation of the switches.

Further, the first-order adjustment unit 121 and the second-order adjustment unit 122 can be configured as a knob device, so that the user can adjust the internal variable resistance through the rotation of the knob. Regulation also allows the user to more accurately adjust to the desired output voltage.

The present invention has been disclosed in the above preferred embodiments, and it should be understood by those skilled in the art that the present invention is only intended to depict the present invention and should not be construed as limiting the scope of the present invention. It should be noted that variations and permutations equivalent to those of the embodiments are intended to be included within the scope of the present invention. Therefore, the scope of protection of this creation is subject to the definition of the scope of patent application.

100‧‧‧Signal control processing module (power adjustment circuit)
110‧‧‧Signal Generator
120‧‧‧Output strong and weak lead
121‧‧‧First-order adjustment unit
122‧‧‧Second order adjustment unit
200‧‧‧output driver
210‧‧‧Switch Acceleration Unit
220‧‧‧Switch unit
300‧‧‧Power supply
400‧‧‧electrode output group
410‧‧‧Transformer unit
420‧‧‧electrode
V _DD ‧‧‧ rated voltage
O‧‧‧Output voltage
P‧‧‧voltage source
S‧‧‧ control signal

[Fig. 1] is a block diagram of a circuit configuration of an electrotherapy machine. 2 is a circuit configuration diagram of a power supply appliance output strength weak guide (OVL) in an embodiment of the present invention. 3 is a circuit configuration diagram of a power supply appliance output strength weak guide (OVL) in another embodiment of the present invention.

100‧‧‧Signal control processing module (power adjustment circuit)

200‧‧‧output driver

300‧‧‧Power supply

400‧‧‧electrode output group

O‧‧‧Output voltage

P‧‧‧voltage source

S‧‧‧ control signal

Claims (3)

A power adjustment circuit of an electrotherapy machine provides a control signal to an output driver, such that a voltage source provided by a power supply connected to the output driver can generate an output voltage through the output driver, and the output voltage is transmitted And an electrode chip set connected to the output driver to generate an output of the electrotherapy machine, wherein the power adjustment circuit comprises a signal generator and an output strong weak leader, wherein the signal generator is configured to output a rated The voltage is generated by the modulation of the output strong and weak leader, and the output strong pre-conductor comprises: a first-order adjustment unit receiving the rated voltage to provide the first-stage voltage by the internal variable resistor Adjusting and generating an output; and a second-order adjustment unit connecting the first-order adjustment unit to receive its output, providing a second-stage voltage adjustment by an internal variable resistor and generating an output to the corresponding output driver. The power adjustment circuit of claim 1, further comprising a plurality of the second-order adjustment units, wherein the second-order adjustment units are all connected to the first-order adjustment unit to receive an output thereof. The power adjustment circuit of claim 1 or 2, wherein the first-order adjustment unit and the second-order adjustment unit are each a knob device for adjusting an internal variable resistor through rotation of the knob.