Abstract: An apparatus and a method for retrofitting RIDs onto conventional surge protectors at the boundary between a subscriber's telephone lines and the telephone company's wiring comprises a mounting unit which serves as an interface between the surge protector and the RID. The mounting unit connects to the surge protector terminals and retains a RID device. The mounting unit includes connection terminals which receive incoming subscriber wires and form a conductive contact between the subscriber terminals and the RID terminals. In one aspect of the invention, the mounting unit is configured so that the mounting unit as well as the attached RID both fit conveniently beneath the already existing surge protector housing. In a further aspect of the invention, the mounting unit may be configured to interface with a variety of differently configured surge protector devices. In still another aspect of the invention, intermediate mounting brackets are used in conjunction with the mounting units.

Abstract: The invention relates to compact means for turning power on and off and regulating that power as it is supplied to a pulsed transmitting module in a phased array radar system. The arrangement comprises an operational amplifier, which compares the voltage across the module with a gated programmable digital voltage reference, and a high bandwidth power transistor serially connected with the load, the conductivity of which is controlled to adjust the load voltage to the reference value. Capacitive coupling prevents burnout of the transmitting module from a sustained "on" signal and a capacitive feedback connection at the operational amplifier limits the rise time of the voltage supplied to the load to avoid ringing. The use of a "switch" in a regulating mode reduces the amount of local storage capacity required to achieve comparable regulation, and leads to a power conditioner for an individual transmitting module, which is both compact and of high performance.

Abstract: The present invention relates to a reception system for radar and communications systems in which interference cancellation takes place in a correlation loop. In the present invention, automatic means are provided for digitally adjusting the phase shift around the correlation loop to insure loop stability and optimum interference cancellation.

Abstract: The invention discloses an ignition system control circuit which may be mounted within a distributor housing such as is used with internal combustion engines. The ignition system control circuit is coupled to a direct current source and appropriately connected to the primary winding of the high voltage generating coil of the ignition system. Current through the primary of the high voltage generating coil is controlled by a Darlington power amplifier, the conduction and non-conduction of which is appropriately synchronized to the engine. The control circuit includes a constant current source connected to a biasing resistor network of the Darlington power amplifier, and the constant current source supplies the Darlington power amplifier with a value of current to assure saturation of the Darlington power amplifier to allow maximum current to flow through the primary winding of the ignition coil notwithstanding substantial variations in voltage of the direct current source.

Abstract: This disclosure is of an inverter type power supply including an actively switched damping circuit for limiting voltage transients in the inverter circuitry. Such damping is accomplished by switching an energy absorbing element into parallel circuit relationship with the inverter transformer during periods in which transients normally occur, the energy absorbed during these transients then being either dissipated or stored and later returned to the inverter transformer for improved circuit efficiency.

Abstract: A regulated power supply which may be of the A.C.-to-D.C. type utilizes a ries arrangement of inverters because of a voltage rating of these inverters with respect to the magnitude of the D.C. driving voltage available either as a consequence of rectifying an A.C. voltage source or other reasons. The regulator has a self-balancing feature which insures that all of the inverters equally share the D.C. driving voltage and also includes a protection feature which safeguards the inverters against damage caused by a malfunction of any one of the units.