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Soft starts, opened doors, and Einstein on radio
Kicking, er, nudging off our trio of Design Ideas for this fortnight, our first Design Idea shows how a "Simple circuit allows long PWM soft starts." Members of the UC384x family of current-mode, PWM controllers favored by power-supply designers include a compensation-input pin that also offers a handy "hook" for adding a slow-startup capability to your design. Why bother? ... (more) Details... more...
Mixed signal circuits put you in control
This week's batch of Design Ideas contains several mixed-signal ideas. First up, Ahmad Ayar, of Maxim Integrated Products in Sunnyvale, CA presents "Linear-brightness controller for LEDs has 64 taps." Applications that include LEDs but no microcontroller (or other form of control intelligence) can benefit from a simple circuit that provides manual c... (more) Details... more...
Returning trio tackles PWM regulators, current monitoring, digital I/O
Editor's note: Chuck Small has taken over Design Ideas editing duties from Brad Thompson.This week's new batch of Design Ideas features a trio of returning authors.First up, Grant Smith of National Semiconductor, in "Current mirror improves PWM regulator's performance," virtually halves the component count of the feedba... (more) Details... more...