Alternating current power supply electronic clock with power saving structure

Abstract

The invention discloses an alternating current power supply electronic clock with a power saving structure, comprising an electronic clock main body, which is characterized in that the electronic clock is provided with a power-switching circuit capable of saving power, the power-switching circuit is positioned outside the electronic clock main body and connected with the electronic clock circuit of the electronic clock, transfers the voltage of an urban electricity power supply circuit into a direct voltage consistent with the time oscillating frequency of the electronic clock and outputs thedirect voltage to the power output end of the electronic clock circuit. The power-switching circuit comprises a rectifying circuit, an auto-excitation type intermittent oscillation circuit, an outputcircuit and a feedback circuit, wherein the auto-excitation type intermittent oscillation circuit comprises a switch transformer T1, a flux reset circuit, a power regulation chip IC1 and a supply circuit of the power regulation chip. The invention has the characteristics of high electric energy transformation efficiency, obvious energy saving effect, high stability of output voltage, little sourceeffect and load effect, small volume, light weight, global utilization and the like.

Description

【Technical field】 [0001] The invention relates to an electronic clock, in particular to an AC power electronic clock with a power-saving structure which saves 40-50% of electricity compared with the traditional AC power electronic clock. 【Background technique】 [0002] As we all know, a clock is a timing tool. The development of contemporary electronic technology makes electronic clocks more important and more widely used timing tools than mechanical clocks. It has been widely used in all aspects of people's lives. Electronic clocks include quartz clocks and quartz watches using batteries as DC power and electronic clocks using AC power. Although electronic clocks powered by batteries do not rely on external power supply, due to the limited service life of batteries, they are only suitable for miniature electronic timers such as watches. For electronic clocks that use AC power, they are basically powered by the traditional method, that is, the AC voltage of 90V ~ 240V (the...

AI Technical Summary

Problems solved by technology

First of all, because the voltage transformation of the transformer is low-frequency transformation, the power loss of the iron core and coil of the transformer is large, and the power conversion efficiency is low. The conversion efficiency is only about 30%, which leads to serious heating of the transformer and large power loss.

Second, because the transformer is a traditional silicon steel sheet transformer, the volume and space occupied are large, making the electronic clock large in size and heavy in weight. For electronic clocks with the same size display screen, this electronic clock with a built-in power circuit The overall volume is much larger, resulting in waste of raw materials

Third, the electronic clock with a built-in power supply circuit can only be used in a single country due to the limitation of a single input AC voltage, and the time difference will change with the change of the AC power supply, and the timing error is large

However, so far, the energy consumption problem of the above-mentioned electronic clock with built-in power supply circuit has not attracted enough attention, and there is no effective solution

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