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AN203: 8-bit MCU Printed Circuit Board Design Notes
AN203: 8-bit MCU Printed Circuit Board Design Notes

BASIC SET-UP GUIDE –- gtb 2 ESC
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CM-35XT Loop-Powered Panel Meter 3 1/2 Digit 0.48” LCD
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... The CM-35XT is specially designed to simplify installation, calibration and scaling. It is one of the CM-Series family of meters. Deriving their operating power from the current loop, these meters require no external power supply. The CM-35XT is a functional replacement for the now obsoleted CM-35X ...
SP211EH 数据资料DataSheet下载
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... pump circuitry that generates the +/-10V RS-232 voltage levels using 0.1µF charge pump capacitors. The SP211EH and SP213EH devices feature a low-power shutdown mode, which reduces power supply drain to 1µA. Enhancements to this series include a higher transmission rate of 500kbps, a lower power supp ...
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... a preferred solution due to the reduced installation time and significant space savings compared to traditional open rack filters. Air core reactors are commonly used to mitigate back-to-back switching transients; however when rated for tuning, air core reactors can require large magnetic field clea ...


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...  The fuse-holder BCB is installed only on the units with internal batteries (20 and 30kVA). The battery switch is not installed on units having higher power  The forced cooling of the heatsink is provided starting from the 40kVA  The rectifiers of the 500kVA and 650kVA uses two three-phase rectif ...
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... across, but not down. ...
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Buck converter



A buck converter is a voltage step down and current step up converter.The simplest way to reduce the voltage of a DC supply is to use a linear regulator (such as a 7805), but linear regulators waste energy as they operate by dissipating excess power as heat. Buck converters, on the other hand, can be remarkably efficient (95% or higher for integrated circuits), making them useful for tasks such as converting the main voltage in a computer (12V in a desktop, 12-24V in a laptop) down to the 0.8-1.8V needed by the processor.
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