
To radio sounded good on the UHF band, it should be adjusted to exactly take the radio. Will help you with this indicator fine adjustment circuit of which offers Bulgarian journal “Radio Television Electronics”.
The DC component of the FM demodulator is supplied to the comparison circuit (comparator), is performed on four low-power silicon transistors! for example, KT315, KT361, and two LEDs АЛ102А—АЛ102В (see figure).
With the engine variable resistor R5 on the right shoulder of the comparator serves a reference voltage from a stabilized power supply.
Recommend to read
THE PROJECT-MODEL-CAR
Design and manufacture of midget cars is one of the popular directions of technical creativity. This can be judged by the growing number of automodular presented at various technical...
ARCH APARTMENT
Interior of modern apartment became fashionable to decorate various architectural forms. These include decorative arch, installed in the openings of corridors. The construction of the...