Andy,
what you say requires intelligence to be done. Intelligence nowadays
is a scarce resource,
and it is more and more made optional. Who needs it ? When the red lamp
glows, just push
the yellow button. That's all.... :-(
73 Alberto I2PHD
-------------------------------------------
Andy wrote:
When it comes to calculations, the most useful ability is not to be able to
caculate it exactly, caculator or no, but to quickly be able to estimate a ball
park answer or approximation.
Who needs to know that 22uH at 137kHz has 18.93 ohms reactance.
Its quicker to think " a bit more than 20 times a bit less than 0.14, times
6-and-a-bit
... is 2.8 times 6-and-a-bit , so call it 18 ohms"
And they don't teach that in schools - and never have done, to my knowledge!
Andy G4JNT
|
