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Discharging circuit and projector using discharging circuit

A technology of discharge circuits and projectors, applied in the field of discharge circuits, can solve the problems of slowing down and reducing the production speed of factories, and achieve the effects of speeding up the release speed, increasing the production speed, and reducing the waiting time.

Inactive Publication Date: 2013-09-25
QISDA OPTRONICS (SUZHOU) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the actual standby power consumption is measured from the power line cable, it needs to wait for 2 to 3 minutes, which slows down due to the detection of standby power consumption and reduces the production speed of the factory

Method used

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  • Discharging circuit and projector using discharging circuit
  • Discharging circuit and projector using discharging circuit
  • Discharging circuit and projector using discharging circuit

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Experimental program
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Embodiment Construction

[0023] In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are provided in conjunction with the embodiments.

[0024] Such as figure 1 Shown is a block diagram of the discharge circuit of a preferred embodiment of the present invention. The present invention provides a discharge circuit 101 which is applied to a projector. The projector is a DLP type projector, and the projector includes a power supply unit 103 having a PFC circuit 104, and the power supply unit 103 provides a plurality of power sources for the projector. Wherein, the number of the power sources is set according to the requirements of the actual circuit structure in the projector. In this embodiment, the power supply unit 103 provides a first power supply and a second power supply for the projector, where the first power supply is a P12V power supply 105, the second power supply is a P3PV power supply 106, and t...

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PUM

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Abstract

The invention provides a discharging circuit which is applied to a projector. The projector comprises a power supply unit with a power factor correction circuit. The power supply unit supplies power to the projector. The power factor correction circuit is provided with a capacitor element, the discharging circuit is electrically connected to the power supply unit and comprises a switch circuit and a control circuit which is electrically connected with the switch circuit, the switch circuit is used for controlling the power supply unit to discharge, and the control circuit is used for controlling the disconnection and connection of the switch circuit, and meanwhile electrically connected to the power supply unit and the power factor correction circuit. When the projector is in a working state, the power supply unit is started to charge the capacitor element in the power factor correction circuit, and the switch circuit is disconnected. When the projector is in a standby state, the switch circuit is connected, and the capacitor element in the power factor correction circuit releases electric charge through the discharging circuit.

Description

Technical field [0001] The invention relates to a discharge circuit, in particular to a discharge circuit applied to a projector. Background technique [0002] At present, the standby power consumption of the projector needs to be less than 0.5W to comply with environmental protection and safety regulations. But the internal signal converter of DLP (Digital Lightal Procession) projectors usually doubles as system control. The standby power consumption of this type of integrated circuit is relatively large, and it cannot reach less than 0.5W of the whole machine. [0003] The current practice is to add a simple micro control unit (MCU, Micro Control Unit) to the projector for standby control. This micro control unit needs infrared control (IR) and universal asynchronous receiver / transmitter (UART, Universal Asynchronous Receiver / Transmitter). ), keyboard control (Keypad control) and other functions, it is also necessary to record the basic settings and data of the projector, so th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042G03B21/00G01R21/00
CPCY02P80/10
Inventor 黄伟钧
Owner QISDA OPTRONICS (SUZHOU) CO LTD