音响用电十四问（Fourteen questions for sound electricity）.docVIP

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音响用电十四问（Fourteen questions for sound electricity）.doc

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音响用电十四问（Fourteen questions for sound electricity） Question 1: why does the light flash when the stereo is turned on? Answer: This is because the audio equipment is switched on, because the equipment within the large capacity capacitor in the no-load discharge state before the shutdown, press the power switch, capacitor immediately draws power from the transformer, the current drawn by the great (called charging current), resulting in a sudden decline in power, the fluorescent lamp will naturally dark. After the general level, as long as the total filter capacitor capacity of more than 20000 F, the boot will occur when this phenomenon. Therefore, part of the design of high power perfect expansion machine, when starting with buffer circuit, that is to say when you turn after a large cement resistance buffer, make internal capacitor charging slowly, after a period of time (about a few seconds) to relay on, so it can not only protect the fuse will not suddenly broken, it can avoid the lights flashed by. Question two: does the power supply of the power station really suck? Answer: when you encounter power supply instability, the total no matter 37, twenty-one, blame the first unit. If you understand the people of Taiwan, you will argue vigorously and make reasonable explanations. In fact, there is no problem with the power supply of the power station. The phenomenon of power instability is disturbed by the process of distribution. Lets start with the power plant. The main power plants are now divided into two categories, one is nuclear power generation, the other is thermal power plant. Whether nuclear power or thermal power, they use the power of steam to drive the steam turbine to drive the generator. This is a very power equipment precision, the speed of the turbine is related to the frequency stability between generator and turbine transmission system with large, computer control, in order to maintain a stable output frequency under various load (60Hz). Whats more, t