Solid relay with input threshold control and running method thereof

A technology of solid state relay and threshold control, which is applied in the direction of electrical components, electronic switches, pulse technology, etc., can solve the problem of high sensitivity of input voltage control and achieve the effect of reducing requirements

Active Publication Date: 2009-06-24
G & A TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing solid-state relay input control is single-point control, and the on-off and off points are the same voltage point, which requires high sensitivity to input voltage control.

Method used

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  • Solid relay with input threshold control and running method thereof
  • Solid relay with input threshold control and running method thereof
  • Solid relay with input threshold control and running method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The present invention has the circuit of embodiment 1 of the solid state relay of input threshold control such as figure 1 As shown, the output of the input threshold control circuit 1 is connected to the capacitive three-point oscillation circuit 2, and the output of the capacitive three-point oscillation circuit 2 is connected to the acceleration release circuit 3 and then connected to the field effect transistor as the output terminal of the relay.

[0018] The input threshold control circuit 1 includes the first to fourth threshold control resistors R1~R4, the first and second threshold control transistors V3 and V4, the first and second threshold control diodes V1 and V5, and the voltage regulator transistor V2 and OFF Disconnect the voltage regulator tube V6. The power supply is connected to the anode of the first threshold control diode V1, the cathode of the first threshold control diode V1 and the first threshold control resistor R1 are connected to the emitter...

Embodiment 2

[0028] Embodiment 2 of the solid state relay with input threshold control of the present invention is as image 3As shown, it includes the same input threshold control circuit 1, accelerated release circuit 3 and field effect tube as in the first embodiment, the difference is that the capacitor three-point oscillation circuit 2 in the first embodiment is replaced by a photovoltaic coupler 4. The fourth threshold control resistor R4 of the output terminal 1 of the input threshold control circuit is connected to the input terminal of the photovoltaic coupler 4 after the filter capacitor C1 is connected in parallel and the resistor R5' is connected in series. The output voltage of the photovoltaic coupler 4 is added to the oscillating output resistor R8 and connected to the accelerated release circuit 3 . The operation method of the solid state relay with input threshold control in this example is also similar to Example 1: when the input terminal of the input threshold control c...

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Abstract

The invention discloses a solid relay with input threshold control and operation method thereof, which comprise an accelerating release circuit, a field effect tube connected with the accelerating release circuit and used as an output end, and an input threshold control circuit. The input threshold control circuit is connected with the accelerating release circuit through a capacitance three-point oscillator circuit or a photovoltaic coupler; the input threshold control circuit comprises a voltage regulator tube and a fitting diode, a triode, a resistor and a capacitor; wherein, the voltage regulator tube is a turn-on voltage regulator tube controlled by turn-on voltage to realize the threshold control circuit. The solid relay circuit with input threshold control is arranged on a printed circuit board, and is connected with power components on a base through circuits; a shell is covered on the printed circuit board and the power components; the base is connected with the shell through a fastening piece. The solid relay with input threshold control can satisfy the separation of turn-on voltage point and turn-off voltage point, and adjust the design values of the turn-on voltage point and the turn-off voltage point according to practical requirements.

Description

(1) Technical field [0001] The invention relates to the technical field of solid state relays, in particular to a solid state relay with input threshold control and an operating method thereof. (2) Background technology [0002] The solid-state relay is a non-contact switching element composed of solid components. The input terminal controls the turn-off or conduction of the output terminal. It has no moving parts and contacts, reliable operation, long life, fast switching speed, and strong anti-interference ability. However, the existing solid state relay input controls are all single-point control, and the on and off points are the same voltage point, which requires high sensitivity to the input voltage control. (3) Contents of the invention [0003] The purpose of the present invention is to provide a solid state relay with input threshold control and its operating method, which can satisfy the separation of the turn-on voltage point and the turn-off voltage point, and ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H03K17/687
Inventor任海峰
OwnerG & A TECH