A good article about signal distortion in a Butterworth low pass opamp filter using C0G and X7R MLCCs. https://www.edn.com/signal-distortion-from-high-k-ceramic-capacitors/
2024-03-22 USB Power Delivery Trigger Adapter
Some important information for those who wish to power their projects with a USB C “power delivery” adapter. You may need one of these. This is a YouTube short video.
2024-03-11 Flexible LED Filaments
Some information on what current and resistors to use. The LEDs are all in parallel and need about 3 Volts, current limited with a resistor. https://www.facebook.com/reel/909951727389682?mibextid=9drbnH&s=yWDuG2&fs=e
2024-03-08 Some Rube Goldberg Inventions That Could Make Some Cool Projects
Mostly wood. Short video. https://www.facebook.com/reel/1099537448068091?mibextid=9drbnH&s=yWDuG2&fs=e
2024-03-08 FWBR Ripple Calculator Online
This may be helpful when choosing the amount of capacitance for a certain unregulated AC power supply – the kind that uses an old fashioned transformer. It calculates one variable given the others. https://www.chipbuilder.com/full-wave-power-supply-ripple-calculator.html
2024-04-06 The Flexible LED Filament
This YouTube short demos a flexible LED filament and shows how to configure it for 5VDC.
2024-03-01 Innovative Dome Shaped Homes In S. Dakota
Dome shaped homes use cellular concrete 20% with 80% air, which makes it a good insulator. In the Pine Ridge Reservation in S. Dakota. They founded “In Our Hands” non-profit. Short video. https://www.facebook.com/reel/1889790898142946?mibextid=9drbnH&s=yWDuG2&fs=e
2024-02-22 Building A LiFePO4 Battery
A YouTube short of a 12V 315Ah LiFePO4 battery being assembled. I wish I could find out what the background music is.