Hi,
I have a couple of items to share.
PV2 TriodeThe is PV2 triode is about as close as it gets Fleming's triode. There is a seal at the top of the envelope. The filament, grid and anode are clearly visible. It is a very simple structure and you can see it is very closely related to light bulb.
What makes this extra special, to me, is that it was my Grandfather's. He was interested in radio receivers.
This component is so cool that it has a heater
Analog Device CMOS DACsNot actually a component, but a cool part of analog history. This can is a promotional item made for analog devices. It was to promote CMOS DACs. You can not say it is part of Silicon Valley history, because Analog devices is in Massachusetts.
Cans like this one, were mentioned in these two stories:
Sheingold wasn't the only ADI employee subject to practical jokes. Pease noted how Analog Devices was touting Paul Brokaw's new CMOS circuits with a custom soup can. So Pease took the can of "CMOS DACs", drilled a small hole in the bottom and back-filled it with sea moss. He managed to solder up the hole in the can and sent it to Brokaw.
They hoped Brokaw would enjoy his "sea moss soup". Apparently he Post Office did not cooperate. When recently told this story, Brokaw says that, "I never got the SeaMoss. I never even knew about it until now."
Dan Sheingold was with George A. Phibrick and then Analog Devices.
Paul Brokaw was instrumental in the development of band-gap references, among other things.
Pease is Bob Pease of Philbrick and National Semiconductor.
Pease was not the only competitor to respond to the ADI CMOS DAC soup cans. Jim Williams and Jim Cecil bought a Big Mac, stuffed a bunch of National Semi CMOS DACs into the meat patty put the burger back in its original box and sent it to ADI's Dan Sheingold with a note, "Enjoy your Big DAC attack".
Sheingold told Williams that the burger "was a bit green around the edges" by the time he got it.
Jim Williams, Philbrick, National Semiconductor and Linear Technology.
Source:
http://www.edn.com/electronics-blogs/anablog/4311370/Pranking-bosses-friends-and-competitors-The can is empty.
The parts listed on the can are:
AD7533 - Still in production from Analog Devices
AD7542 - Still available from Analog Devices
AD7541 - Analog Devices
AD7524 - Analog devices and TI?
AD7523 - Obsolete
AD7522 - Obsolete
Regards,
Jay_Diddy_B