11. A fault detector circuit, as claimed in claim 1, including visual and audible hazard indicating means; relay contacts controlling connection of said indicator means to a source of potential; a relay operating coil controlling said relay contacts; and a transistor amplifier having an input conne...
A further object of this invention is the provision of a relay that by the application of a small amount of power can regulate a much larger amount of power while at the same time reducing or eliminating surges in the relay. Still another object of the invention is the provision of a gen...
With this configuration, by using an auxiliary switch element such as a high conductive relay or the like, connected in parallel to the bi-directional semiconductor switch element, it is possible to considerably increase the capacity of a load current. When the opening and closing unit is turned...
Electronic circuit 22 is associated with a relay 42, whose coil can be acted on with a switch voltage via the electronic circuit 22 and whose switch element actuates the switching means 36. According to other exemplary embodiments, the switching means can be constituted by a semiconductor ...