June 17, 2009
News - According to Pete - Filte…
about 2 years ago
Nice video. Explaining analog filters in 15 minutes does not sound like an easy task! I learned them in school, but I didn’t really ‘get it’ until I worked with some real world examples.
My vote would be to set up a couple real circuits and test equipment and show what you can do with a simple RC or Sallen Key. You seem to have a love for audio, so maybe an example showing how to remove 60 Hz hum or removing digital noise from a sensor output. I would get more value out of seeing those filters in action and understanding your component choices instead of going over the equations to configure a Bessel or Chebyshev roll-off.
DSP would be cool too, but if you can explain DSP in 15 minutes, then you should be nominated for some sort of award!
News - According to Pete - Augus…
about 3 years ago
The mixer circuit you describe (@3:30) looks like an adder (summing) circuit to me. If the input to the opamp is a virtual ground, then a 1V input signal will cause 100uA through each 10K resistor. The output will need to go to -3V to pull 300uA through the feedback resistor to compensate. Is there something that I’m missing?
As always, awesome video. Your projects inspire me to start hacking stuff together every month. I can’t wait to see some LEDs on that guitar!
No public wish lists :(
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