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Noise wars: Projected capacitance strikes back against internal noise

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I thought it would be good to continue looking at the example I gave in my last blog where we looked using fewer LDOs and combining power supply rails on an ADC while maintaining isolation with ferrite beads.
Electronic equipment and power management is becoming increasingly critical as our power grid ages and renewable energy comes on line. In response, new technologies are being developed to protect equipment from power disturbances and fluctuations.
This is the first of many chronicles I will write regarding the many talented authors on Planet Analog
While ultracapacitors can outlast most electronic components in any application, they can meet an early demise if you really try. But the list of things you can do to kill an ultracapacitor is pretty limited.
Reverse polarity is a dangerous electrical condition that can be difficult to prevent once a system leaves the factory, so adding circuitry that protects against its effects is an important part of improving system reliability. This article looks at the many methods for protection and weighs their tradeoffs.
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