Abstract: The invention concerns a method for indirect and sequential measuring of the absolute position of an element (1) comprising a binary coding produced by means of coding units (7) of the same surface, relatively moving with respect to an element provided with a device for reading said coding (7), said coding (7) delimiting differentiated sectors each comprising an identical separating zone, called separator, and an zone identifying a single sector, called identifier, the list of the identifier codes being contained in a memory zone accessible via a device for processing binary data transmitted sequentially bit by bit by said reading device when the elements are relatively moving.

Abstract: This overload protection circuit capable of sustaining high capacitive load or any other load which may create an important inrush current, comprises a differential bridge composed of high impedance measuring resistors (R1, R1' R3, R3'), a low impedance sensing resistor (R2), and a timing and control circuit (20) including a transistor (T2), a capacitor (C1) and resistors that controls a switch (T1) and limits the inrush current of the subcircuit capacitor by slowing the closing of the switch. In case of defaults, the switch will be opened fast enough to minimize the fault transient transfer from down-stream to up-stream of the protection circuit. In addition, a comparator (32) associated to a resistor (R31) providing an hysteresis enables to avoid the oscillations in the region of the system transition from on to off states and vice versa. This circuit can be used in a system which comprises a secondary power supply unit (9) which powers a plurality of subcircuits (22).