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Amplitude modulation

by mkbh_10
Tags: amplitude, modulation
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Sep24-08, 06:20 AM
P: 220
1. The problem statement, all variables and given/known data

In my electronics practical class, i assemble a ckt of amplitude modulation using BC107 transistor ,but the modulated wave always has the same phase up and above , there is no phase difference b/w the upper and lower part of the wave .

My teacher also couldn't understand the problem . I made the ckt 3-4 time but same result .

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Sep24-08, 08:11 AM
Redbelly98's Avatar
P: 12,070
If you don't post a circuit schematic, there's not much people here can do to help.
Sep24-08, 08:18 AM
P: 373
Sounds to me like non-linearity. Do you have the bias point set for class-A operation?

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