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Yet more LED applications, a power sequencer, and an old Design Idea returns
Just when I think that I’ve seen all possible permutations of multiple-LED driver and controller circuits, readers of Design Ideas devise yet another clever method of lighting ‘em up. Based on Atmel’s ATTiny13 single-chip microcontroller, our leadoff Design Idea, “Microcontroller drives logarithmic/linear dot/bar 20-LED display,&#... (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...