Conrad Course material 10090 14 years and over 10090 Manual De Usuario
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10090
Coil Tap
The learning package also contains two coils with the lower inductivity of 47 µH (blue sleeve).
Put one of these coils in series with the present oscillating circuit coil. The entire inductivity now
increases to approx. 267 µH, the lower reception frequency drops to approx. 580 kHz. At the same
time, the oscillating circuit coil is tapped. Applying the input of the receiver IC to this tap will lead to
less suppression of the oscillating circuit. This increases resonance voltage and selectivity. Precise
adjustment makes it possible to receive even more stations in the evening.