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97 Suppliers

97. Electronic circuits, how to choose the filter capacitor?

In Electronic Infomation Category: 9 | on September 20,2011

How to Select the filter capacitor, in particular, the choice of the output filter capacitor, the stability of the circuit play a very important role. 50 Hz frequency circuits used in common electrolytic capacitors, the ripple voltage frequency of only 100 Hz, charge and 97 datasheet and discharge time is orders of magnitude of milliseconds. For smaller ripple factor, the required electrical capacity of up to hundreds of thousands of microfarads, the general low-frequency electrolytic capacitors of the main objective is to increase the capacitance, capacitor capacitance, loss tangent and 97 price and leakage current is identified their advantages and 97 suppliers and disadvantages of the main parameters. The switching power supply output filtering electrolytic capacitor, the sawtooth voltage and frequency up to tens of kilohertz, or ev...

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97. Why is the new single-chip low frequency clock?

In Electronic Infomation Category: 9 | on September 14,2011

High-frequency external clock is one of the noise source, not only interfere with single-chip applications, but also on the circuit outside interference, so that does not meet the requirements of electromagnetic compatibility. Systems that require high reliability, low frequency outside the system around the clock help to reduce the noise. Microcontroller used in some of the internal PLL, the external clock is low, can produce a higher speed internal bus, thus ensuring the speed and 97 datasheet and reduce noise. Motorolas MC68HC08 family of 16/32-bit microcontroller uses this technology to improve reliability....

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