A New Type of Solid State Relay

A solid-state relay, a new type of technology, applied in the direction of electrical components, electronic switches, pulse technology, etc., can solve the problems of high price and restrictions on the promotion and use of solid-state AC relays, and achieve high versatility, wide application range, and low on-state voltage. Effect

CN105049018BActive Publication Date: 2018-02-09常州纬途流体科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-02-09

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    Figure 1
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    Figure 2
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    Figure 3
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Abstract

The invention discloses a novel solid-state relay, and belongs to the technical field of relays. The novel solid-state relay comprises a control input end, an isolating circuit, a trigger driving circuit, a logical reverse circuit, an output circuit and a floating direct-current voltage-stabilized source. The grids of two power field-effect transistors are controlled through the floating direct-current voltage-stabilized source, so that control of an alternating-current load or a direct-current load is realized, and the on-state voltage drop is low. The novel solid-state relay has high universality and a wide application range.
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Description

technical field

[0001] The present invention relates to a solid state relay, more specifically, to a novel solid state relay. Background technique

[0002] The English name of solid state relay (also known as solid state relay) is Solid State Relay, or SSR for short. It is a non-contact switching device with relay characteristics that uses semiconductor devices instead of traditional electrical contacts as switching devices. The single-phase SSR is a four-terminal active device, including two input control terminals, two output terminals, and optical Isolation, after adding a DC or pulse signal to the input to a certain current value, the output can change from the off state to the on state. Solid state relays are reliable in operation, long in life, no noise, no spark, no electromagnetic interference, fast switching speed, strong anti-interference ability, small size, impact resistance, vibration resistance, explosion-proof, moisture-proof, corrosion-proof, and can be comp...

Examples

Embodiment 1

[0024] combine Figure 4, a new type of solid state relay in this embodiment, including a control input terminal, an isolation circuit, a trigger drive circuit, a logic flip circuit, an output circuit, and a floating DC stabilized power supply. The floating DC stabilized power supply includes a first resistor R1, a rectifier Diode Q3, energy storage capacitor C, bidirectional voltage regulator diode D1, one end of the first resistor R1 is connected to the common terminal COM, the other end of the first resistor R1 is connected to the anode of the rectifier diode Q3, and the cathode of the rectifier diode Q3 is respectively connected to the energy storage capacitor The anode VC of C and the first end of the bidirectional voltage regulator diode D1, the negative pole S of the energy storage capacitor C is connected to the second end of the bidirectional voltage regulator diode D1; the control input end includes the second resistor R2 and the first light emitting diode LED1, the ...

Embodiment 2

[0029] combine Figure 5 , the basic circuit connection of a new type of solid-state relay in this embodiment is the same as in Embodiment 1, the disadvantage is that the load circuit is a DC load, the load circuit includes a load RL and a direct current DC, and the positive pole of the direct current DC is connected to the common terminal COM and then connected to the load One end of the RL, the other end of the load RL is connected to the first output end d1, and the negative pole of the direct current DC is connected to the second output end d2.

Embodiment 3

[0031] combine Figure 6 , the basic circuit connection of a new type of solid-state relay in this embodiment is the same as in Embodiment 1, the disadvantage is that the load circuit is a DC load, the load circuit includes a load RL and a direct current DC, and the positive pole of the direct current DC is connected to the common terminal COM and then connected to the load One end of the RL, the other end of the load RL is connected to the first output end d1, and the negative pole of the direct current DC is connected to the third output end s.