555 Timer Circuits

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astable multivibrator

astable multivibrator Hackaday Continuing the theme of astability, [pratchel] went completely solderless and built the circuit on a breadboard. The LDR's legs are kept separate by a piece of cardboard. This kind of...

Jun 3, 2016

Forced quenching improves three-transistor FM tuner

Forced quenching improves three-transistor FM tuner EDN.com Adding an external oscillator to force the quenching of the circuit solves these problems. A two-transistor astable multivibrator is used for this quenching...

Feb 29, 2016

From Breadboard to Printed Circuit – Part I

ElectronicsWeekly.com (blog) From Breadboard to Printed Circuit – Part I ElectronicsWeekly.com (blog) PCB design is easy, right? To a certain extent that's fair to say; with a growing number of schematic design...

Nov 21, 2014

Dudley Buck's Forgotten Cryotron Computer

IEEE Spectrum Dudley Buck's Forgotten Cryotron Computer IEEE Spectrum Immediately following the Second World War, electrical engineers grappled with a fundamental but open question: How should electronic digital...

Mar 19, 2014

These 15 Dirty-Sounding Words Are Just Scientific Terms (So Get Your Mind Out Of The Gutter)

Huffington Post These 15 Dirty-Sounding Words Are Just Scientific Terms (So Get Your Mind Out Of The Gutter) Huffington Post Admit it. Any time someone talks about the planet Uranus, you (or someone else) can't...

Jul 18, 2014

Hacklet 43 – Flashlight projects

Hackaday Hacklet 43 – Flashlight projects Hackaday He then added in an adjustable oscillator circuit : two BJTs and a handful of discrete components make up an astable multivibrator . A third transistor switches the...

Apr 17, 2015

Guest Post: Ruminating Rigid-Flex – Dos and Don'ts of Flex Circuit Circuit Design (Part 3)

ElectronicsWeekly.com (blog) Guest Post: Ruminating Rigid-Flex – Dos and Don'ts of Flex Circuit Circuit Design (Part 3) ElectronicsWeekly.com (blog) Today, designers face increasing project requirements for...

Mar 17, 2014

Guest Post: Electronics (collaborative) design (part 2)

Guest Post: Electronics (collaborative) design (part 2) ElectronicsWeekly.com (blog) Ben Jordan got his start in electronics as an 8 year old, when his big brother got him his first soldering iron with a multivibrator LED...

Aug 20, 2014

ERNIE

iProgrammer ERNIE - A Random Number Generator iProgrammer It is hard to believe that a whole computer could be needed just to generate some random numbers, but this was the first ERNIE's role in life and in 1957 it...

Sep 6, 2013

One I/O line drives shift register with strobe

EDN.com One I/O line drives shift register with strobe EDN.com Further improvement is possible by adding a monostable multivibrator circuit , like in Reference 4. Finally, we propose the simplest solution. In this...

Mar 28, 2013

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