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The Smell of Molten Projects in the Morning

Ed Nisley's Blog: shop notes, electronics, firmware, machinery, 3D printing, and curiosities

Search Results for: lm3909

Electronics Workbench, Oddities, Science

Discrete LM3909: Green and Blue vs. Dead Alkalines

Two months to go from 1.0 V (!) to nearly zero

2021-06-262021-06-23Blinkies
Electronics Workbench

Discrete LM3909: Blue LED

As good a use for dead cells as I can think of

2021-05-032021-04-30Blinkies
Electronics Workbench, Science

Discrete LM3909 Blue LED: Off at 1.0 V

The LED waveform shows it needs about 2 V

2021-03-152021-03-14Blinkies1 Comment
Electronics Workbench, Science

Discrete LM3909: Green LED at 1.15 V

It’s still flashing

2020-10-122020-10-04Blinkies2 Comments
Electronics Workbench

Discrete LM3909: Blue LED Radome

A 1 MΩ resistor serving as a mechanical strut

2020-09-172020-09-11Blinkies, M22 Comments
Electronics Workbench

Discrete LM3909: Blue LED Waveforms

The LED lights brightly, then fades away

2020-09-162020-09-13Blinkies, Improvements1 Comment
Electronics Workbench, Science

Discrete LM3909 vs. DSO150 Scope

A dirt-cheap single-trace oscilloscope can get you quite a ways to the goal

2020-09-092020-09-08Blinkies6 Comments

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