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Six more, and an announcement
What’s your least favorite electronic component? If it’s resistors, you’re in luck. Author Martian Stofka follows up his earlier contribution, Gain-of-three amplifier requires no external resistors, with a variant-- this Gain-of-two inst... (more) Details... more...
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...
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...