Embedded Systems Conference
Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 3 / 5   >   >>
PETER.WEISSKOPF
User Rank
Author
re: Hans Camenzind, 555 timer inventor, dies
PETER.WEISSKOPF   8/17/2012 4:08:12 AM
NO RATINGS
In 1980 I used a 555 timer to build a temp controller for an thermopile cooled IR detector. It was not PWM but simply a fixed pulse width frequency modulated waveform driving a buck switching circuit. OP-amp comparator built in, and elegantly simple circuit was what I recall. Pete Weisskopf

krh
User Rank
Author
re: Hans Camenzind, 555 timer inventor, dies
krh   8/17/2012 3:12:13 AM
NO RATINGS
555...Swiss army knife of analog ICs...brilliant...

daleste
User Rank
Author
re: Hans Camenzind, 555 timer inventor, dies
daleste   8/17/2012 2:46:05 AM
NO RATINGS
Thanks for the pointer to his book. I will enjoy this read! I hope some of the young engineers are reading this so that we will have the next crop of analog gurus.

kg5q
User Rank
Author
re: Hans Camenzind, 555 timer inventor, dies
kg5q   8/17/2012 2:42:08 AM
NO RATINGS
What a useful and great part - I have used it for years and I expect it still gets designed in to circuits and systems every day. I suspect if you tried to initiate the 555 timer in many of todays bean-counter run technology companies you would not be able to get approval to move forward with it. The approval staff (of usually all non-technical people who have not been a customer or called on one for a living) would say - "for the business case to be approved I need to know the one customer that will buy millions" and if you said - " millions of people will design that into millions of applications" they would say "not enough data... denied!!! The golden age of semiconductors.... before finance and operations ruled the earth engineers did we went to the moon-and the US and our companies were financially strong I miss those days! RIP Mr. Camenzind - I hope your tombstone says " I did not need a business case - I made one on my own"

Biomed
User Rank
Author
re: Hans Camenzind, 555 timer inventor, dies
Biomed   8/17/2012 2:19:31 AM
NO RATINGS
Honestly I never knew WHO invented the 555 or PLL I just thought was a product of semiconductor Cos. But when the new method of Controlling motor speed w/o losing torque known as "Pulse width modulation" PWM and the controllers were a box of 3 cards full of discrete components and analog circuits. Nobody was thinking of using the 555. so, I thought that if running the 555 in Astable multivibrator mode and using a VR you in effect could change the duty cycle and thus the duty cycle of the square wave output. PWM!! I used such a circuit along with a NPN power tab and VOILA!! worked Perfectly. All in circuit One inch square or less. So, I can say I was one of the first, if not the first, to utilize the 555 for PWM in motor control So, now that I know who made such versatile device; HAPPY TRAILS Buddy!! Thanks.

GREATTerry
User Rank
Author
re: Hans Camenzind, 555 timer inventor, dies
GREATTerry   8/17/2012 1:54:58 AM
NO RATINGS
Yep 555 is one of the fantastic device ever been used. LTC's timerblox may be another follow on product line that expand the functionality of multiple 555 features.

Biomed
User Rank
Author
re: Hans Camenzind, 555 timer inventor, dies
Biomed   8/17/2012 1:49:49 AM
NO RATINGS
The 555 was a Hybrid. it wasn't pure Analog.

brucer1
User Rank
Author
re: Hans Camenzind, 555 timer inventor, dies
brucer1   8/17/2012 1:19:50 AM
NO RATINGS
The 555 was my intro into designing with ICs. I learned electronics in the Navy circa 1960 and understood only vacuum tube technology until the mid 70's when I bought a book which I believe was call the "The 555 cookbook" and a Powerace bread board. It was an epiphany, no more huge transformers,rectifiers or capacitors for filament current or plate votage; gone were sockets with all kinds of nasty wiring. Just sweet clean 5 vdc, a symmetrical caterpillar of an IC that you just push into a matrix of holes,some jumper wires and the next thing you know you've got a circuit that can do something. 46 years later and I have to say that changed my life! Thanks, and RIP Hans Camenzind, you've done more for me than the sum of the rest of my education. Bruce Grossman Chief of R&D EZtimers Manufacturing

arppix
User Rank
Author
re: Hans Camenzind, 555 timer inventor, dies
arppix   8/16/2012 10:34:24 PM
NO RATINGS
Wow...I remember when the 555 came out - I was 12 years old, learning electronics in my basement workshop. It definitely had an impact on me - I spent hours playing with it along with opamps and TTL devices. Recently I bought some for a small hobby project and had fun all over again. How many designs are still relevant and useful after 40 years? Not many...RIP Mr. Camenzind.

Michael.Karagosian
User Rank
Author
re: Hans Camenzind, 555 timer inventor, dies
Michael.Karagosian   8/16/2012 10:08:47 PM
NO RATINGS
Hans was my second employer, and one I will always remember. He was a brilliant analog designer. He left his post as head of R&D at Signetics, and launched Interdesign with the purpose of bringing analog integration to a broad market of products that otherwise could never afford it. The 555 was Interdesign's first project - he sold it back to Signetics for a flat fee, with no royalty. Interdesign was very successful, though, and he did well. Hans' enthusiasm and energy was infectious. For a young engineer, he was a wonderful man to work for. May he rest in peace.

<<   <   Page 3 / 5   >   >>


Radio
NEXT UPCOMING BROADCAST
In conjunction with unveiling of EE Times’ Silicon 60 list, journalist & Silicon 60 researcher Peter Clarke hosts a conversation on startups in the electronics industry. One of Silicon Valley's great contributions to the world has been the demonstration of how the application of entrepreneurship and venture capital to electronics and semiconductor hardware can create wealth with developments in semiconductors, displays, design automation, MEMS and across the breadth of hardware developments. But in recent years concerns have been raised that traditional venture capital has turned its back on hardware-related startups in favor of software and Internet applications and services. Panelists from incubators join Peter Clarke in debate.
Flash Poll
Top Comments of the Week
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Special Video Section
The LTC®4015 is a complete synchronous buck controller/ ...
10:35
The LT®3042 is a high performance low dropout linear ...
Chwan-Jye Foo (C.J Foo), product marketing manager for ...
The LT®3752/LT3752-1 are current mode PWM controllers ...
LED lighting is an important feature in today’s and future ...
Active balancing of series connected battery stacks exists ...
After a four-year absence, Infineon returns to Mobile World ...
A laptop’s 65-watt adapter can be made 6 times smaller and ...
An industry network should have device and data security at ...
The LTC2975 is a four-channel PMBus Power System Manager ...
In this video, a new high speed CMOS output comparator ...
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 ...