Unlock instant, AI-driven research and patent intelligence for your innovation.

A power supply

A technology of power supply and AC voltage source, applied in the field of power supply, which can solve problems such as mismatching

Active Publication Date: 2006-10-18
CREATIVE TECH CORP
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the typical power required by the control circuitry used to "wake" the device from standby can be as low as a few milliwatts
As a result, there is a huge mismatch between the actual power required and the power consumed by a device in standby mode

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A power supply
  • A power supply
  • A power supply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0125] figure 1 is a block diagram of the first embodiment of the present invention, figure 2 A circuit implementation of this embodiment is shown.

[0126] refer to figure 1 and 2 , the input is the AC power supply V1. The AC power source may be any AC voltage of any frequency, such as 110VAC, 120VAC, 230VAC or 240VAC at 50 or 60Hz. An AC power source V1 is connected to a current limiter 101 comprising two capacitors C1 and C2. Power consumption can be controlled by varying the value of the capacitor as described below. Then, the AC signal is rectified by a rectifier 103 formed by 4 diodes D1, D2, D3 and D4. Note that this rectifier is a full wave rectifier which provides a DC output with two maxima per AC cycle. Capacitor C3 acts as a voltage limiter 105 for limiting the voltage of node 200 to prevent equipment damage caused by excessive voltage. Capacitor C3 may be omitted if the circuit element has a very high breakdown voltage, ie greater than the maximum value o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

There is provided a power supply for an electrical device, an electrical device including such a power supply and a method for supplying power to an electrical device. The power supply comprises a transformer having primary and secondary windings. The primary winding is connectable to a AC voltage supply and circuitry on the secondary side is arranged to provide a DC output voltage for the electrical device. The power supply also comprises a switch between the primary winding of the transformer and the AC supply, a rectifier for rectifying the AC voltage, and a current limiter. The switch is arranged to switch on at some point as the rectified AC voltage increases, once it has reached a non-zero value, thereby providing a current flow through the primary winding and hence through the secondary winding. The current limiter is arranged to limit the amount of current flowing through the primary winding. The switch is arranged to switch off before the rectified AC voltage starts to increase again.

Description

technical field [0001] The invention relates to a power supply for an electronic device and a method for supplying power to the electronic device. In particular, the present invention relates to power supplies with low power consumption. Background technique [0002] It has become more and more important to save energy and reduce power loss, and a power supply with low power consumption is also becoming more and more important. This kind of power supply can be applied in many situations, such as: as a standby power supply in electronic equipment (such as TV sets, washing machines); standby power supply in external power supplies, used to provide power to detect whether electronic equipment is connected to external power supplies, and to connect Mains power (such as in a portable phone charger, where the phone is placed into a slot to charge); or an independent power source for electronic devices that require low power consumption (such as a night light that plugs into an AC...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/04
CPCH02M3/3385H02M7/2176Y02B70/10H02M1/0032H02M7/05H02J9/005
Inventor 牧野润王忠方
Owner CREATIVE TECH CORP