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For those of you involved in embedded systems development: which of the following types of operating system are you planning to use in your next project?
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In-house developed OS
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 11%
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Commercial proprietary
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 13%
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Linux
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 41%
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Android
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 12%
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My project doesn't need an OS
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 22%
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Visit The Poll Archives
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High-voltage capacitor charging made simple
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High-voltage design (>100 V) has unique challenges; a new IC can simplify the challenge but engineers still need to be aware of the critical issues
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Bruce Haug, Product Marketing Engineer, Linear Technology Corp.
Planet Analog
03/16/2009 12:00 PM
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Designing a high-voltage capacitor charger or power supply up to a thousand volts is not a trivial task. A discrete solution using a general-purpose flyback PWM controller with an optocoupler, monitoring, status and protection features normally require lots of circuitry and has high design complexity. It is essential to avoid an input over-current fold-back condition that can occur during turn-on due to the capacitive load looking like a short circuit.
The need for developing a high-voltage across a capacitor can be required for professional high-voltage photoflash systems, security-control systems, pulsed radar, automotive air- bag squid firing, emergency strobes, security/inventory control systems and detonators. Reliability, cost, safety, size, and performance are the major design obstacles that a high-voltage power supply designer must contend with. However, the recently introduced LT3751 from Linear Technology greatly simplifies this design task.
To read the entire article, click here
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