Beefy Boxes and Bandwidth Generously Provided by pair Networks
"be consistent"

Re: Constants you cannot help but remember

by toma (Vicar)
on Jun 09, 2004 at 05:05 UTC ( #362621=note: print w/ replies, xml ) Need Help??

in reply to Constants you cannot help but remember

Here's some from my EE role:

  • The 1% resistor values closest to the 5% resistor series
  • The 5% capacitor series
  • 2.54
  • 3.14159
  • 2.71828
  • 159kHz ~ 1M Radian/sec, where 1mH = j1k and 1uF = -j1
  • Way too many component specifications, such as 2N2222A Betamin = 100
  • An arcane corporate part-numbering scheme that dates back to microfilm and punch cards.

It should work perfectly the first time! - toma

Comment on Re: Constants you cannot help but remember
Replies are listed 'Best First'.
more EE constants
by sleepingsquirrel (Hermit) on Jun 10, 2004 at 23:25 UTC
    And those with an affinifity for BJT IC design

    25ohms (re @ 1mA Ic)
    -2mV/C (Vbe tempco)
    1.21V (band-gap voltage)
    25mV (thermal voltage)
    0.35 (converting BW to rise time and back)
    99.7% (3 sigma)

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://362621]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others rifling through the Monastery: (6)
As of 2015-11-29 06:57 GMT
Find Nodes?
    Voting Booth?

    What would be the most significant thing to happen if a rope (or wire) tied the Earth and the Moon together?

    Results (748 votes), past polls