The outlook of high frequency switch power supply in application to high fidelity audio frequency power amplifier is indicated.

指出了高频开关电源在高保真音频功率放大器中广阔的应用前景。

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Switch power of high frequency is serious electromagnetic interference (EMI) source, so EMI source filter usually should be added in switch power.

高频开关电源是严重的电磁干扰源，很多情况下需对其安装emi电源滤波器。

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The provided typical wiring diagram is one set of battery is set for each set of switch power, please kindly supply the wiring diagram in AUTOCAD2004 version in line with the project actual purchase.

提供的典型接线图为每套开关电源配置一套蓄电池，请按工程实际订货提供接线图（AUTOCAD2004版）。

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... A 'green power' program regularly invites customers to pay $4 to $10 extra per month to switch to clean energy.

VOA: standard.2010.03.23

But several firms have devised systems that can switch power in milliseconds.

ECONOMIST: ENERGY: Building the energy internet | The

The power button however isn't your normal standby switch and is in fact, a real, live power switch.

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There are further cost issues in upgrading the national grid to cope with power surges and the need to switch between different power sources.

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