Recent content by kevlat

Equivalent resistance for three resistors in parallel I believe the problem is to find the equivalent (total) resistance, call it Rt. If it is then you can do this two ways. (1) use product over sum twice or (2) use reciprocal formula for resistors in parallel. (1) find R2 in parallel...

I'd like to amend that. Trig can be used to simplify the product of two sine waves to a sum of the carrier and two sidebands. The sidebands are really cosines, which are phase-shifted sines.

The AM carrier frequency is constant but the modulation signal can change. If you look at the case of modulating the AM carrier frequency (a sine wave) with a pure sine wave, the resulting AM waveform is close to what you would get if you multiplied the two sine waves. AM mixing is like...