摘要:
A relay having two coils which are arranged axially flush on a base body (1), wherein each coil has a winding (23, 33) and a core (14, 15) connected by means of a U-shaped yoke (12). A single armature (13) is supported on a center section of the yoke (12) such that it can be changed over between the inner ends of the two cores (14, 15). In addition, two contact springs (7, 8) are arranged between the two cores, on both sides of the same, parallel to the armature. The contact-making ends of the two contact springs rest on a common center contact element (61) in the quiescent state. Depending on which winding (23 or 33) is energized, a corresponding contact spring (7 or 8 respectively) is lifted off the center, contact element (61) and moved into contact with an outer contact element (51 or 52 respectively). The relay is advantageously suited as a pole-reversal relay for driving DC motors having a changing rotation direction (e.g., as found in motor vehicles).
摘要:
A bidirectional motor has two electromagnetic contactors, one for forward, the other for reverse operation. Thermal protection is provided by a thermal image generator and a thermal protection unit in each contactor operating in tandem via a bidirectional line of communication keeping the thermal images in parallelism by one active contactor "talking" to the inactive contactor, the "listener".
摘要:
A reed switch includes a housing in which extends a stepped bore for slidably receiving a magnet carrying sleeve. The sleeve includes a longitudinal bore which receives a glass tube. The sleeve is slidable with respect to the glass tube. The glass tube encloses a switch element. The longitudinal bore is connected to the environment via pressure-equalizing bores in order to avoid the build-up of a high pressure or a vacuum inside the read switch. Collecting pockets for dirt particles are provided between the sleeve and the housing. The stepped bore opens at one end of the housing. The open end of the housing has an inner chamfer which forms an edge from which fluid easily falls away.
摘要:
A flasher device includes a printed circuit board enclosed in a casing, a B-terminal connected to a battery, an L-terminal connected to a direction indicating lamp, and an E-terminal connected to ground. A fixed contact of a relay section is attached to the L-terminal and a current detecting resistor is connected between the B-terminal and a movable contact of the relay section, so that a main lamp current flows from the battery to the lamp through the B-terminal, the current detecting resistor, the relay contacts and the L-terminal, thus avoiding the flow of main lamp current through copper foils formed on the printed circuit board.
摘要:
A high frequency R-F switch includes a switch body or housing made from a conductive material or a non-conductive resin having a conductive layer plated on the body surfaces. The switching device includes a first external connector, a first conductor having a switching contact member connected to the first external connector for switching a connection with the switch contact member. A conductive housing supports the first conductor, a second external connector and second conductor. The switch body or housing is in electrical connection with the second external conductor.
摘要:
A compact contactor for a battery operated lift truck. The contactor may be mounted in either of two positions and has its terminals arranged so it can be easily connected in a reversing circuit for a motor. The contactor includes a novel movable contact support which is molded in situ with a magnet plunger. The movable contact support completely isolates the springs for the movable contacts from the switching areas of the contactor and provides a guide for the movements of the plunger. The support for the stationary contact is arranged to position the terminals of the contactor so the contactor is easy to wire and permit a range of different sized contacts to be mounted on the support and electrically connected by a pair of metal members.
摘要:
A temperature responsive electric control device has electric contacts, a body of thermo-magnetic material, and a magnet movable between two positions in the first of which it is held by magnetic attraction with the body while this body is at a temperature below its Curie point, and in the second of which it operates by magnetic attraction to actuate the contacts.
摘要:
Electromagnetic relay having a flat magnet core and a flat armature. The armature movement takes place around one of the edges of the magnet core. A U-shaped spring-clip, by elastic deformation of its legs, fastens a spring set on the core in such a position that a spring set by turning of the armature is brought from a rest position to a work position. The legs of the spring-clip extend beyond the magnet core at its side turned from the springs set and are provided each with a notch in order to form a bearing for projections on the armature.