An inductive connector has two coils which are inductively coupled when the two parts of the connector are "connected." Associated with one of the parts is a third coil which is movable, normally automatically, into inductively coupled relationship with the other coil of that part when the parts are separated. An impedance is connected in circuit with the third coil, whereby impedance matching with a source connected to the aforesaid other coil of that part can be achieved when the parts are separated.
A male plug for an underwater electrical connector wherein a movable rod is contained within a plug housing to exclude the ambient water medium in order to protect the internal electrical contacts. When coupled with a complementary female receptacle, the rod can be extended into the receptacle and first and second sets of electrically connected spaced apart contacts on the rod establish electrical communication between electrical conductors of the receptacle and electrical conductors of the plug respectively.
The live insertion circuit of the present invention comprises a movable magnetic body for changing an inductance of a variable inductor, and the movable magnetic body is moved toward a supporting member by a rod at the time of inserting the package into the unit. At this time, an inductance of the variable inductor is changed according to the connection condition of terminals for connecting the package and the unit, thus suppressing a surge current.
An inductive coupler for transferring electrical power from the primary to the secondary is disclosed. A secondary coil assembly having a pair of cores each having a secondary winding is disposed in a case having an opening at one end thereof. The core has a central post projecting from the axial center of a disc-shaped base and an annular skirt projecting from the rim of the base in the same direction, thus forming therebetween an annular groove in which the secondary winding is disposed. As a coil case having a primary winding is inserted between the paired cores and moved further inward of the case, the secondary coil assembly is moved inward of the case. During this movement of the secondary coil assembly, its paired cores are caused to displace toward each other while being guided by pins sliding along guide slits until the cores are mated together thereby to form a magnetic circuit of the inductive coupler. Provisions are also made to retain the secondary coil assembly in the position where the cores are closed and also to urge the secondary coil assembly toward the opening of the case.
The inductive coupling for transferring electrical energy to or from a transducer and measuring circuit, consists of a male connector part (2) and a female connector part (10). The male part (2), includes a single layer solenoid (7) wound on a ferromagnetic rod (6), the ends of the solenoid (5a and 5b) connected to conductors (3a and 3b) connected to an ultrasound probe (not shown) via cable (1). The female part (10) includes a single layer solenoid (11). The ends of solenoid (11) are brought out to terminals (13a and 13b) to facilitate electrical connection to the ultrasound drive electronics (not shown). The coupling provides a simple sealed signal connection between the cable connected with the transducer and the measuring circuit electronics without the disadvantages of having exposed contact surfaces. The cable connector can be replaced if desired.
A connection system for the preferably contactless transmission of data and power supply signals between a sensor means and a base unit in a measuring and transmission system comprises a sensor-side and a base-side connection element. An input unit is provided on at least one of the connection elements for inputting sensor-relevant commands.
