JPS5828604Y2 - Low frequency therapy waveform generator - Google Patents

Description

[Detailed description of the invention] The present invention relates to a low frequency therapeutic waveform generator, which is synchronized with the repetition period of the low frequency therapeutic waveform generator and operates an operation display circuit at the rise of the output of the generator. An object of the present invention is to provide a low frequency therapeutic waveform generator that can display operations with a sense of rhythm.

Hereinafter, the present invention will be explained based on drawings showing embodiments thereof.

In FIG. 1, 1 is a first square wave generator that generates a group waveform frequency, and 2 is a second square wave generator whose input is connected to the output of the first square wave generator 1 and whose operation is controlled by the output. a square wave generator; 3 a pulse amplifier for amplifying the operational output pulses of the second square wave generator 2; 4 a pulse output circuit to which the pulses amplified by the pulse amplifier 3 are fed as input signals; 5 the first pulse amplifier; An envelope control circuit that shapes the output of the square wave generator 1 as a control waveform, and this envelope control circuit 5 connects its output to the input a of the pulse output circuit 4 and sends it to the input as an input signal. is configured to control the envelope line that is

Reference numeral 6 denotes an operation display circuit connected to the output of the first square wave generator 1, and this operation display circuit 6 receives its output C.
Connect the indicator lamp 7 to the first
It is configured to be turned on in synchronization with the operation of the square wave generator 1.

FIG. 2 shows a specific circuit configuration of the operation display circuit 6. This operation display circuit 6 uses a differentiator circuit consisting of a capacitor 8 and a resistor 9 to detect the rise of the output of the first square wave generator 1. and the first square wave generator 1
By synchronizing with the repetition period of the first square wave generator 1, the operation can be displayed with a sense of rhythm.
By shortening the differential time constant consisting of and resistor 9,
While shortening the lighting time of the indicator lamp 7 and reducing the average current, a peak current necessary for visual recognition is ensured.

In FIG. 2, 10 is a transistor that amplifies the square wave differentiated by a differentiator circuit consisting of a capacitor 8 and a resistor 9, and the collector of this transistor 10 is connected to a resistor 1.
1 to an indicator lamp 7.

12 is a battery power source for lighting the display lamp.

In addition, since the envelope control circuit 5 in FIG. 1 can shape the output of the first square wave generator as a control waveform, by slowing the rise of the group waveform frequency, a low frequency treatment device can be used. It can relieve the electrical stimulation when

As described above, according to the present invention, the operation display circuit is synchronized with the repetition period of the first square wave generator that generates the group waveform frequency, and is operated at the rising edge of the output of the first square wave generator. Since the display lamp is configured to light up, it is possible to display whether or not the low frequency treatment waveform generator is operating with a sense of rhythm.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a low frequency therapeutic waveform generator showing one embodiment of the present invention, and FIG. 2 is a circuit diagram showing a specific example of an operation display circuit in the generator. 1...First square wave generator, 2...Second square wave generator, 3...Pulse amplifier, 4.
... Pulse output circuit, 6 ... Operation display circuit, 7 ... Display lamp.

Claims (2)

[Scope of utility model registration request] (1) a first square wave generator that generates a group waveform frequency, and a second square wave generator whose output is connected to an input and whose operation is more controlled; and,
a pulse amplifier for amplifying the operational output pulses of the second square wave generator; and a pulse output circuit to which the pulses amplified by the pulse amplifier are sent as an input signal, the circuit repeating the operation of the first square wave generator. A low frequency therapeutic waveform generator, characterized in that it is synchronized with the cycle and is configured to operate an operation display circuit and light an indicator lamp at the rise of the output of the first square wave generator. (2) The operation display circuit is configured to differentiate the output of the first square wave generator using a differentiator circuit, and amplify the display current to light the display lamp, and also to A low frequency therapeutic waveform generator according to claim 1, wherein the constant is made shorter than the repetition period of the first square wave generator.