modified 12 years ago

AM wave transmission

00:53:19

AM wave is tx and a BPF centred about 2MHz is applied at o/p.

published 12 years ago

justinmcg67

12 years ago

Are you sure this is a TX and not RX? It looks very similar to a crystal radio.

hurz

12 years ago

Yes, this is TX. Adding two frequencies and apply them to a nonlinearity. In this case a diode. Math is exp(f(a)+f(b)) the output then has infinite frequency products but the most strongest is the product f(a)×f(b) This is probably the most simplest AM modulator. Very nice, gracias!

hurz

12 years ago

Only the values for cap and coil are choosen just by math knowledge but not with practical electronic background ;-) i would prefer around 3.3uH and 2nF. Anyway there are more things for a real working one e.g. Q quality of resonator and Voltage.......

APeyush

12 years ago

Yes, this is tx and uses the nonlinear behaviour of diode at low voltage.

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