Amplitude modulation using using BC107 transistor

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SUMMARY

The discussion centers on troubleshooting an amplitude modulation circuit using a BC107 transistor. The user reports that the modulated wave exhibits no phase difference between its upper and lower parts, indicating a potential issue with circuit configuration. Suggestions from other forum members point towards checking the bias point for class-A operation and the importance of providing a circuit schematic for effective assistance. The problem likely stems from non-linearity in the circuit design.

PREREQUISITES
  • Understanding of amplitude modulation principles
  • Knowledge of transistor operation, specifically BC107 characteristics
  • Familiarity with class-A biasing techniques
  • Ability to read and interpret electronic circuit schematics
NEXT STEPS
  • Research class-A biasing methods for transistors
  • Learn about non-linearity in transistor circuits
  • Study amplitude modulation techniques in detail
  • Explore circuit schematic design and analysis
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Electronics students, hobbyists building modulation circuits, and anyone troubleshooting transistor-based audio applications.

mkbh_10
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Homework Statement



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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If you don't post a circuit schematic, there's not much people here can do to help.
 


Sounds to me like non-linearity. Do you have the bias point set for class-A operation?
 

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