Off-delay type relay output circuit

A technology of relay output and power-off delay, applied in the field of relay output circuit and power-off delay relay output circuit, can solve the problems of large volume, high component cost, and difficulty in product miniaturization, so as to reduce the product volume. , The effect of reducing production time and facilitating SMT production

Inactive Publication Date: 2016-06-08
WEIDMULLER INTERFACE SHANGHAI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to specific institutional requirements, electromagnetic relays are generally relatively large in size, and it is diff

Method used

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  • Off-delay type relay output circuit

Examples

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Example Embodiment

[0016] Example

[0017] See figure 1 As shown, the power-off delay relay output circuit includes a control unit 10, a MOSFET driving optocoupler 20, a MOSFET turning off optocoupler 30, a MOSFET driving network 40, a MOSFET tube 50 and an output unit 60; the control unit 10 is driven by the MOSFET respectively The optocoupler 20 and the MOSFET turn-off optocoupler 30 are connected, the MOSFET driving optocoupler 20 and the MOSFET turn-off optocoupler 30 are both connected to the MOSFET 50 through the MOSFET driving network 40, and the MOSFET 50 is connected to the output unit 60.

[0018] Among them, the control unit 10 includes two first voltage output terminals, a second voltage output terminal, a first resistor R17, a second resistor R16, a first network level set high / low output terminal RLY_ON, and a second network level The high / low output terminal RLY_OFF of the MOSFET drive optocoupler 20 is a photocell output type optocoupler, including a photocoupler U4. The MOSFET turn...

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Abstract

The invention discloses an off-delay type relay output circuit. The circuit comprises a control unit, an MOSFET (Metal Oxide Semiconductor Field Effect Transistor) driving optocoupler, an MOSFET shutoff optocoupler, an MOSFET driving network, an MOSFET tube and an output unit; the control unit is respectively connected with the MOSFET driving optocoupler and the MOSFET shutoff optocoupler; both the MOSFET driving optocoupler and the MOSFET shutoff optocoupler are connected with the MOSFET tube by the MOSFET driving network; and the MOSFET tube is connected with the output unit. By the circuit design adopted by the invention, a signal is controlled in an off-delay stage and an additional current does not need to be consumed for maintaining an output state, so that the energy storage requirement of a signal delay control circuit is reduced, and when a volume of the product is reduced, element cost can be reduced; and meanwhile, due to no adoption of a conventional magnetic latching relay, all the products can be packaged by using patches, a more light and thinner product size is easy to achieve, the off-delay type relay output circuit is convenient for SMT (Surface Mount Technology) production, production time is reduced, and the off-delay type relay output circuit has wide application prospect.

Description

technical field [0001] The invention relates to a relay output circuit, in particular to a power-off delay relay output circuit, belonging to the technical field of time relays in industrial control applications. Background technique [0002] In industrial control, some millisecond-level pulse control signals are inconvenient to be recognized by general-purpose controllers. In this case, the industry generally uses power-off delay relays to expand the pulse width and convert millisecond-level switching signals into second-level level signals, making it easy to be recognized by general-purpose controllers; at the same time, this This kind of power-off delay relay can also eliminate the influence of the false reversal of the output signal caused by some circuit fluctuations. [0003] In addition, since the delay module and output device of the power-off delay relay still continue to work after power-off, it is generally maintained by an energy storage capacitor, and its energ...

Claims

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Application Information

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IPC IPC(8): H03K17/28H03K17/687H03K17/78
CPCH03K17/28H03K17/687H03K17/78
Inventor 钱诚凡冬青刘中
Owner WEIDMULLER INTERFACE SHANGHAI
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