My IC-designer pal Don Sauer, that I told you about here, here and here, just sent a neat little web page JavaScript program that you can use to relate frequency, capacitance and resistance (zip).

[Paulo] just tipped us about an Excel based high frequency transistor amplifier calculator he made. We’re guessing that some of our readers already are familiar with these class A amplifiers, commonly ...

A ripple tank can be used to measure and calculate frequency, wavelength and the speed of waves on the surface of the water. A ripple tank is a transparent shallow tray of water with a light shining ...