Conrad Course material 10090 14 years and over 10090 Manual De Usuario
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10090
Uncoupling
The more sensitive the receiver, the higher the risk of interferences from undesired feedback from the
LF amplifier to the receiver input. One possible way of coupling signal feedback to the input is the
voltage supply. If the battery is no longer all new, its internal resistance increases. This may lead to
unpleasant side noise. The best solution for this is uncoupling with a large capacitator. Insert another
electrolytic capacitator of 47 µF between the two supply connections. This improves interference
resilience.