Tuesday, August 31, 2021

RF resistance data

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 I'm putting this here so it does not get misplaced.
Monday, August 30, 2021

Consider the dualities. The opposites. What can we say about them? light - dark E field - H field particles at rest or in motion.

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 Consider EMF, current, B and motion. Can we have any of them without the other? Suspend a wire in a H field and send a current threw it, it...

LDO low voltage - pinned vs surface mount components

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I was planning a single cell radio. The previous oscillator was looking good but will need a little more thought. In the mean time I am look...
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Wednesday, July 28, 2021

A little mind experiment about the coil - core - inductance relationship.

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Q - What is the "Q" of a coil? A - The quality of the coil. Q - OK? Plain English please. A - The reactance and the resistance div...
Thursday, July 22, 2021

Variable inductor controlled by a pot.

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 A weird idea bouncing around in my head. It goes like this: I can use a pot and diode to acts as a variable cap. Why not use a pot and coil...
Thursday, July 1, 2021

Converting the Andy Osc to a GE transistor

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 My young advisor looked the previous post over and gave me two points to consider. The transistor I used was an audio transistor which is n...
Monday, June 28, 2021

The Andy oscillator low voltage version

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 My friend gave me two versions of this oscillator to use in the 40/80. They both gave a flat output over their operating range. I have a 6 ...