Amplitude modulation - potentiometer connected to high frequency signal

[thunderbolt]

"Draw and explain how a potentiometer could be connected to a high frequency signal to demonstrate amplitude modulation."


IS THIS POSSIBLE??? using only potentiometer???
Our instructor gave us this homework but i dont seem to find any answer/or even a hint regarding it.

[DigitalMind]

simple, turn the knob.




you should be able to modulate the amplitude of your high frequency signal.

[rdpzycho]

agree. bale kabit mo sa HF 'yung isang side ng potentiometer, tapos ground 'yung kabilang dulo. kapag inikot mo 'yung knob, magbabago amplitude doon sa gitnang terminal.

[bravokilo]

Icko, hindi nman sinabi kung RF or audio signal lang. Yung high sa audio amp, high freqs din and tawag.AKing ganoon, e di parang volume control lang. Outside terminal to ground, the other one to source, yung center out. parnag voltge divider lang yan.pag inikot to ground, hihina, to opposite, lalakas. ayun amplitude mod yan. kaya ng amplifier kasi pinapalaki ang amplitude.

Kung RF, medyo complex dahil yung POT will affect the oscillation. Pwede kung may ausio amp ka controlled by a POT, yung output nun may transformer with secondary. Series sa secondary yung B+ to the collector of a transistor.

BK

[thunderbolt]

thank u po.

pnpademonstrate lng pla...