éclairage de secours pour moto

The following circuit should prove particularly interesting to those readers considering building their own FM tuner. The novel feature of the circuit is that the well-known CA 3089 IC is not used as a conven-tional IF am pi ifier /demodulator, but as part of a phase locked loop. The resulting circuit is slightly more expensive and complicated than the `standard` amplifier/de-modulator circuits, however the results obtained are a significant improvement on those of a `classi-cal` CA 3089 IF strip.