Design Con 2015
Breaking News
Comments
Kevin Neilson
User Rank
Manager
re: Pacemaker was born of a blackout
Kevin Neilson   12/14/2012 6:09:24 AM
NO RATINGS
Ha! The dude got rich off what seems to be a 555 timer! I think he got the schematic out of a Forrest Mims notebook. I like the extensive testing they did those days. The dude wires up a 555 in a metal box and the next day they hook it up to a girl in the hospital.

DaveR1234
User Rank
Rookie
re: Pacemaker was born of a blackout
DaveR1234   10/31/2014 11:30:34 AM
NO RATINGS
Hey Dude, 555s were in short supply in 1957.

prabhakar_deosthali
User Rank
CEO
re: Pacemaker was born of a blackout
prabhakar_deosthali   10/31/2014 11:42:32 AM
NO RATINGS
Maybe ! But 555 cigarette packs may be available in abundance. That is why the first portable pacemake was made of the size of two ( 555?) cigarette packs ( Just joking!)

Majority of the inventions occur thorugh some accidental events such as the Blackout  ( Like the falling Apple for Newton?)

As they say , THE NEED IS THE MOTHER OF DISCOVERY.

cookiejar
User Rank
CEO
re: 555 born 1971
cookiejar   10/31/2014 11:49:38 AM
NO RATINGS
Signetics introduced the 555 timer in 1971.  It was a bit of a power hog with major disturbances on the supply lines.  Even unijunction transistors gave more stable performance.

CMOS versions of  the 555 were a bit better, but I still preferred CMOS multivibrators and Schmitt trigger gates for low power applications.

bcarso
User Rank
Rookie
re: 555 born 1971
bcarso   10/31/2014 1:55:24 PM
NO RATINGS
I'm with you on the 555.  Although I have great respect for the late Hans Camenzind, I've preferred as you say to roll my own comparable functions out of CMOS and the occasional comparator.

 

Brad



Top Comments of the Week
Flash Poll
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Tired Old iPad 2 vs. Shiny New iPad Air 2
Max Maxfield
7 comments
I remember when the first iPad came out deep in the mists of time we used to call 2010. Actually, that's only four years ago, but it seems like a lifetime away -- I mean; can you remember ...

<b><a href=Betajet">

The Circle – The Future's Imperfect in the Present Tense
Betajet
5 comments
The Circle, a satirical, dystopian novel published in 2013 by San Francisco-based writer Dave Eggers, is about a large, very powerful technology company that combines aspects of Google, ...

Martin Rowe

Make This Engineering Museum a Reality
Martin Rowe
Post a comment
Vincent Valentine is a man on a mission. He wants to make the first house to ever have a telephone into a telephone museum. Without help, it may not happen.

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
16 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Special Video Section
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Doug Bailey, VP of marketing at Power Integrations, gives a ...
See how to ease software bring-up with DesignWare IP ...
DesignWare IP Prototyping Kits enable fast software ...
This video explores the LT3086, a new member of our LDO+ ...
In today’s modern electronic systems, the need for power ...