随笔分类 - Circuit
摘要：The schematic inFigure 1shows a way to increase the power available from a current-limited 5V supply by adding power from a –5V supply. The dc/dc conv...
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摘要：In certain dc/dc-converter applications, on-chip, cycle-by-cycle current limit may be insufficient protection to prevent a failure during a short circ...
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摘要：AC signals can emanate from many sources, and many of these sources are incompatible with the most popular interface voltages, such as TTL. A temptati...
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摘要：This Design Idea explores level-shifting an I2C bus from 5V/ground (positive domain) to ground/–5V (negative domain). In multisupply systems, you some...
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摘要：Low-ripple-voltage positive-to-negative dc/dc converters find use in many of today's high- frequency and noise-sensitive disk drives, battery-powered ...
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摘要：The popular USB interface can charge a portable device while transferring data. But for high-capacity batteries, the 500-mA output current of USB host...
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摘要：The SEPIC (single-ended, primary-inductance-converter) topology is generally a good choice for voltage regulators that must produce an on output volta...
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摘要：LT1961 升压型稳压器造就了兼具升压和降压能力的扁平状SEPICTransformerless dc/dc converter produces bipolar outputsWell-regulated, dual-polarity power supplies find wide use i...
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摘要：Dual-polarity supply provides ±12V from one ICVC (Pin 1): Error Amplifier Output Pin. Tie external compensationnetwork to this pin or use the internal...
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摘要：You can easily use a PC's printer port for serial-EEPROM programming. You can use a device-programmer circuit used to program the MicroWire serial EE-...
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摘要：Added components improve switching-regulator stability
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摘要：Targeting use in portable-system applications that require raising a battery's voltage to a higher level, IC boost regulators often include output tra...
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摘要：Synchronous buck regulators offer high efficiency and are popular in applications in which available input voltages are 12V or less. However, as input...
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摘要：For containing large amounts ofbulk capacitance, controllinginrush currents poses problems.Thesimplest approach involves placing aninrush-limiting res...
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摘要：The circuit inFigure 1delivers programming voltages to an EEPROM under the control of an external DAC (not shown).You can replace the DAC with a poten...
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摘要：The classic LM317 adjustable-output linear voltage regulator offers a relatively high, if package-dependent, current-handling capability. In addition,...
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摘要：Buck regulators find wide application as step-down regulators for converting large positive input voltages into a smaller positive output voltages.Fig...
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摘要：You would normally use a series linear regulator or a dc/dc converter to obtain 3V dc from a higher supply. However, when breadboarding a concept, you...
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摘要：In new mixed-voltage systems, it is often necessary to level-shift a control signal from a high level to a low level. An open-drain device, such as th...
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摘要：http://www.edn.com/design/analog/4329365/Combine-two-8-bit-outputs-to-make-one-16-bit-DAC
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