CODE-CONTROLLED ANALOGUE CLOCKS Russian patent published in 2013 - IPC G04C13/02 

FIELD: physics.

SUBSTANCE: code-controlled analogue clocks have a time keeper, a digital comparator, series-connected amplifier, dc motor, reducing gear and indicator with an hour hand and a minute hand, two position sensors for the minute hand and hour hand, respectively, on the number "12" of the indicator and a rotating sensor for detecting rotation of the minute hand by one minute division (6°), two AND circuits of the sensors, two bidirectional counters of minutes and hours, respectively. Outputs of the minute hand and hour hand position sensors are respectively connected to the first inputs of the AND circuits of the sensors, and the output of the minute hand rotation sensor is connected to the complementing input of the bidirectional minute counter and the second input of the AND circuit of the minute hand position sensor, the output of which is connected to the zero setting input of the bidirectional minute counter, the second input of the AND circuit of the hour hand position sensor and the complementing input of the bidirectional hour counter, the zero setting input of which is connected to the output of the AND circuit. Data outputs of the bidirectional minute and hour counters are connected to like inputs of the digital comparator, the other inputs of which are connected to data outputs of the time keeper, wherein the first input of the digital comparator (A<B) is connected to the add switching inputs of two bidirectional counters and the first input of the amplifier, and the second output of the digital comparator (A>B) is connected to subtraction switching inputs of two bidirectional counters and the second input of the amplifier, outputs of which are connected to the dc motor. A self-contained backup power supply is also connected to electric power circuits of all components except the amplifier.

EFFECT: simple design of clocks and high reliability thereof.

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