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Pulse receiving circuit

A pulse receiving and circuit technology, applied in logic circuits, pulse technology, and logic circuits using optoelectronic devices, etc., can solve problems such as inconsistent signal strength, difference in received current, poor circuit stability and reliability, etc. The effect of less components and low cost

Inactive Publication Date: 2017-11-21
深圳市嘉昱机电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the pulse receiving circuits of different voltages are applied by changing the resistance value in series. When the pulse signals of different voltages are received, the signal strengths are inconsistent, resulting in differences in the pulse receiving current under different voltage signals, resulting in the stability of the circuit. less reliable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 As shown, a pulse receiving circuit includes: a resistor R1, a resistor R2, a voltage regulator tube ZD1, an NPN transistor Q1 and a photocoupler U1.

[0031] One end of the resistor R1 is respectively connected to the PUL+ terminal of the pulse signal source and the first input port of the photocoupler U1, and the other end of the resistor R1 is respectively connected to the base of the NPN transistor Q1 and the cathode of the voltage regulator ZD1; one end of the resistor R2 is connected to The emitter of the NPN transistor Q1 and the other end of the resistor R2 are respectively connected to the PUL- terminal of the pulse signal source and the anode of the voltage regulator ZD1; the collector of the NPN transistor Q1 is connected to the second input port of the photocoupler U1.

[0032]The working principle of the circuit is as follows: when the high-frequency pulse signal PUL+ is at a high level (relative to PUL-), the current flows through the base...

Embodiment 2

[0036] Such as figure 2 As shown, a pulse receiving circuit includes: a resistor R1, a resistor R2, a voltage regulator tube ZD1, a PNP transistor Q1 and a photocoupler U1.

[0037] One end of the resistor R1 is respectively connected to the PUL- end of the pulse signal source and the first input port of the photocoupler U1, and the other end of the resistor R1 is respectively connected to the base of the PNP transistor Q1 and the anode of the regulator tube ZD1; one end of the resistor R2 Connect the emitter of the PNP transistor Q1, the other end of the resistor R2 is respectively connected to the PUL+ terminal of the pulse signal source and the cathode of the voltage regulator ZD1; the collector of the NPN transistor Q1 is connected to the second input port of the photocoupler U1.

[0038] This circuit is a high-frequency pulse receiving circuit with high reliability and wide voltage range, which meets various working occasions of servo drives.

Embodiment 3

[0040] Such as image 3 As shown, a pulse receiving circuit includes: a resistor R1, a resistor R2, a voltage regulator tube ZD1, an N-channel MOS transistor Q1 and a photocoupler U1.

[0041] One end of the resistor R1 is respectively connected to the PUL+ terminal of the pulse signal source and the first input port of the photocoupler U1, and the other end of the resistor R1 is respectively connected to the gate of the N-channel MOS transistor Q1 and the cathode of the voltage regulator tube ZD1; the resistor R2 One end is connected to the source of the N-channel MOS transistor Q1, and the other end of the resistor R2 is connected to the PUL- terminal of the pulse signal source and the anode of the voltage regulator transistor ZD1 respectively; the drain of the N-channel MOS transistor Q1 is connected to the first terminal of the photocoupler U1 Two input ports.

[0042] This circuit is a high-frequency pulse receiving circuit with high reliability and wide voltage range, w...

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Abstract

The invention provides a pulse receiving circuit. The pulse receiving circuit comprises a first resistor, a second resistor, a two-terminal voltage stabilizer, a three-end amplifier and a photoelectric coupler, wherein one end of the first resistor is respectively connected with a pulse signal source and the first input port of the photoelectric coupler, and the other end of the first resistor is respectively connected with the first port of the three-end amplifier and the first port of the two-end voltage stabilizer; one end of the second resistor is connected with the second port of the three-end amplifier, and the other end of the second resistor is respectively connected with the pulse signal source and the second port of the two-end voltage stabilizer; and the third port of the three-end amplifier is connected with the second input port of the photoelectric coupler. The circuit provided by the invention is stable and high in reliability, low in cost, and extremely wide in pulse voltage range.

Description

technical field [0001] The invention relates to the technical field of servo motor control, in particular to a pulse receiving circuit. Background technique [0002] With the increasing use of automation equipment, servo drives are used more and more in the field of industrial control. The servo drive pulse receiving circuit is used to receive external high-frequency control signals to achieve precise control of servo motors. Most of the current servo drives can only receive pulse signals with specified voltage amplitudes, usually only one of the voltage amplitude input methods of 3.3V, 5V, 12V, and 24V. If the signal voltage is too high or too low, the pulse receiving circuit will be damaged. Or the pulse signal cannot be received. Existing pulse receiving circuits generally adapt to various voltage pulse signals by changing the series resistance value. In the prior art, the pulse receiving circuits of different voltages are applied by changing the resistance value in ser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K19/003H03K19/082H03K19/0944H03K19/14
CPCH03K19/00307H03K19/00315H03K19/082H03K19/0944H03K19/14
Inventor 肖国庆
Owner 深圳市嘉昱机电有限公司
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