Energiesparschaltung in einer mobilen Vorrichtung zur drahtlosen Kommunikation

摘要

The energy conserving circuit is for radio communication with a fixed transceiver station and mobile station(s) for audio or data signals, the power source being prim. or sec. cell batteries. The transmitting power can be adjusted depending on the distance between the mobile and the fixed station. The power of the transmitting circuit (11, 14) is set according to the field strength of the signals received. A circuit (9) in the receiving section (3, 4, 5, 6) measures the level of the signal received. A control circuit (10) produces a control voltage for setting the final amplifier (11) of the transmitting circuit, a voltage proportional to this level, even when this level changes.