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Posts Tagged ‘2N3904’

Avalanche pulse generator, and some scope porn.

Saturday, July 20th, 2013

By now we are all sure you know about Jim Williams' avalanche pulse generator from his famous application note 47 we even posted about Kerry Wong's pulse generator using jellybean transistors. And we can't forget The EEVblog covering a build sent to him. Today we will be exploring our build, that is...

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Posted in builds | 13 Comments »

Avalanche pulse generator build using 2N3904

Wednesday, June 26th, 2013

Kerry Wong documented his avalanche pulse generator build using 2N3904: The majority of avalanche pulse generators hobbyists built used 2N2369, the same transistor used in Jim Williams’ original experiment. One of the main benefits of using 2N2369 is that it can avalanche at a relatively low voltage (under 90V). But...

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Posted in DIY, measurement | No Comments »

Recent Comments

  • David Haile: You are a smart person and absolutely correct. That kind of current needs a lead acid car battery behind it. Still, it does have its...
  • KH: The solution discussed in the linked article is wrong. It's a largish Lipo (2500mAh) and he thinks 77uA is acceptable... ha ha ha ha ha....
  • Dave: I never had to opportunity to learn or use this stuff when I was in college (I'm sooo old that op-amps were just being developed...
  • Matthias: Aww yeah.
  • Samuel: Have a nice week everyone