Power-on and power-off control circuit and signal output device

An electrical control and electrical signal technology, applied in program control, computer control, general control system, etc., can solve the problems of slow power discharge, slow power-on, long discharge time, etc., to improve power-off speed and reduce ripple , the effect of shortening the discharge time

Pending Publication Date: 2021-12-03
SUZHOU RIGOL PRECISION ELECTRIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Power supply products have high ripple when they transition from one voltage to another voltage, or output multiple voltages continuously. Existing power supply products require relatively large output filter capacitors in order to reduce output ripple, but the larger the output capacitor, the The discharge is slower when the power is turned off
By simply adding a load resistor R to the discharge line, it will result in a slower power-on speed, even if the switch K is used to control the load resistor R, such as figure 1 As shown, the discharge time is still relatively long when the power supply 1 is turned off.

Method used

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  • Power-on and power-off control circuit and signal output device
  • Power-on and power-off control circuit and signal output device
  • Power-on and power-off control circuit and signal output device

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Embodiment Construction

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0035] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the steps as sequential processing, many of the steps may be performed in parallel, concurrently, or simultaneously. Additionally, the order of steps may be rearranged. The process may be terminated when its operations are complete, but may also have additional steps not included in the figure. The ...

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Abstract

The embodiment of the invention discloses a power-on and power-off control circuit and a signal output device. The circuit comprises an output power supply module, an energy storage module and a constant current control module; the output power module comprises a power anode and a power cathode; two ends of the energy storage module are electrically connected with the power supply anode and the power supply cathode respectively; and the constant current control module is electrically connected to two ends of the energy storage module. According to the technical scheme, the energy storage modules are connected to the two ends of the output power module, electric signals generated when the output power module is powered on can be stored, meanwhile, ripples output by the output power module can be reduced, and the power-on stability is improved; and through the arrangement of the constant current control module, when the output power supply module is powered off, it can be ensured that the energy storage module has constant discharge current, the discharge current cannot be reduced along with reduction of the discharge voltage, the discharge time is shortened, and the power-off speed is increased.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of power supply control, and in particular to a power-on / off control circuit and a signal output device. Background technique [0002] With the development of science and technology, LED, 5G, mobile phone testing, semiconductor, battery and wearable device testing fields have great demand for power supply products. Power supply products can realize voltage conversion through power-on and power-off control circuits. [0003] Power supply products have high ripple when they transition from one voltage to another voltage, or output multiple voltages continuously. Existing power supply products require relatively large output filter capacitors in order to reduce output ripple, but the larger the output capacitor, the The discharge is slower when the power is turned off. By simply adding a load resistor R to the discharge line, it will result in a slower power-on speed, even if the switch K...

Claims

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Application Information

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IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25257
Inventor 邓晶晶王悦
Owner SUZHOU RIGOL PRECISION ELECTRIC TECH
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