Sunday, February 28, 2021
Increased time line to 2 seconds.
Adding REAL world factors.
The circuit was looking so good in sim. I built it and WOW! whiz, pop, motor boat, etc.
The check center screen, start at 0 volts.
Note: I also added the 2 ohm battery resistance.
Next extend the time line.
Adding an output amp for low Z.
This simple addition will drive a low Z earbub well.
My earbud is rated at 1ma so that should be plenty loud enough.
Looking at amplifier circuits in sim and in real world or how to make sims more real.
This basic circuit would be good for a high Z headphone amp.
I reloaded the LTSpice iv simulator with no additional lib.
If you load spice iv you can follow the sims.
This one does not look bad BUT we will look closer latter.
Wednesday, February 24, 2021
More on IF transformers
The brave at heart could do it like this 2 and 3 makes a coil former that can be 'jumble' wound. For a one off production this will work but the jumble wind is not reproducible. (It will need adjustment.)
You can design a single layer coil using this nemograph and a good wire chart.
such as this one.
One more found on the web put in a can and ready to use.