the math which was not discussed, shows this very clearly, in trigonometry if you multiply 2 sine ( or cosine) waves the product is the sum and difference of the the 2 waves. If the oscillator is 2000 KHz, and the radio signal is 1500 KHz, one output will be 3500 KHz, and the second will be 500 KHz. If there's a filter that only allows 500 KHz to pass (that's the IF transformer) then you can amplify this and detect it (more math) and get the audio signal out.
I know it was a slow developmental process, but this is magical, leaving me wondering in awe how they figured this out.
Yes, absolutely. I often think the same way about how technologies develop. We take so much for granted, but we stand on the shoulders of others.
the math which was not discussed, shows this very clearly, in trigonometry if you multiply 2 sine ( or cosine) waves the product is the sum and difference of the the 2 waves. If the oscillator is 2000 KHz, and the radio signal is 1500 KHz, one output will be 3500 KHz, and the second will be 500 KHz. If there's a filter that only allows 500 KHz to pass (that's the IF transformer) then you can amplify this and detect it (more math) and get the audio signal out.
Really good tutorials! I think it is more typical, though, that grids 3 and 5 are connected, with 4 being the signal grid.
Great Job !!
Thanks, Rich.
Fantastic series! :)
Thanks, Flapjack.
@@FluxCondenser I was looking for superhet stuff, found this...stayed to watch the whole series. :)
Fantastic, so glad to hear you’re enjoying the series.
@@FluxCondenser It was excellent. Really great explanations!