candy cane

Aug 11, 2012 9 Replies

formatting link


--



John Larkin Highland Technology Inc

formatting link
jlarkin at highlandtechnology dot com



Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators


Resistor actually, if I recall correctly.

Tim

First photo i have seen of an antenna for communications to Alpha Centarian Sigh-Kicks.

What's underneath those blobs?

I just tacked the manganin wire down with the blobs. After it set, I added the spirals, thermally conductive epoxy. The tube is a ceramic thing from McMaster.

The thing is a low inductance, low TC shunt resistor.

John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators

OIC- low inductance, that explains the wire lay.

Low magnetic pickup and no significant eddy current hooks. Lots of precision resistors, like the Vishay power ones, or the MIL metal case things, have great DC specs but have nasty eddy current interaction with their own packaging, or with a nearby heat sink.

John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators

Never seen grade-B Sci-Fi? Like "The Blob" fer eggzampel.

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required