FIELD: electricity.
SUBSTANCE: invention relates to electrical engineering. A charging circuit (102) for field devices (14) can have at least three operation modes depending on generator (100) voltage. In the first mode, the charging circuit (102) provides stabilised voltage. In the second mode the charging circuit (102) connects the generator (100) directly with an electrical energy storage device (104). In the third mode the charging circuit (102) disconnects the generator (100) from the electrical energy storage device (104). Also disclosed is a field device (14) which employs the charging circuit (102).
EFFECT: design of a charging circuit for wireless devices which can store electrical energy from a generator with widely varying parametres.
17 cl, 8 dwg
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