Automotive 12V to + -20V conver

AutomoTIve 12V to + -20V converter (for audio amplifier) The limitaTIon of car supply voltage (12V) forces to convert the voltages to higher in order to power audio amplifiers. In fact the max audio power x speaker (with 4 ohm impedance) using 12V is (Vsupply +-Vsupply-) ^ 2 ...READING MORE...

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Notebook computer basic maintenance principles

Notebook computer basic maintenance principles LCD Panel * When not using the computer for a long time, you can temporarily turn off the power of the LCD screen only through the function keys on the keyboard. In addition to saving power, you can also extend the screen life. ...READING MORE...

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The trend of China's electronic information industr…

The trend of China's electronic information industry stabilizing and recovering is basically clear The Ministry of Industry and Information Technology ’s website today announced that the economic operation of the electronic information industry in October 2009 poin ...READING MORE...

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