A detector or discriminator in an electronic device might need to be adjusted to a very few points on a scale of a hundred or more points. A digital indicator typically indicates only a fraction of that, possibly 16 points. This is why the analog meter is still useful: it can indicate a small change
(Read More…)
After I unsoldered the parts from my failed ‘noisy regenerative receiver’ circuit, I decided to build a more conventional regenerative receiver, one that uses a single transistor for the regenerative stage. I chose the circuit from a website that I had found, and saved the schematic. But I forgot to document the URL of the
(Read More…)
I cut a piece of plywood and very neatly exposed a screw hole, and I thought it would make an interesting photo. The screw was small, a #4 sheet metal screw about a half inch long. I had to used a magnifying glass lens to get a closeup.
I went through something like this last year, and I looked around online for something to solve the problem. But I came to the conclusion that I didn’t like almost all of them for one reason or another. Usually it was due to cheap, flimsy plastic. So I began again with the intent to solve
(Read More…)
