Abstract: An apparatus for interfacing at least one landline telephone service, at least one wireless cellular-type telephone service, at least one cellular-type wireless telephone and at least one standard telephonic type communication device through standard building interior telephone cable.

Abstract: An apparatus for interfacing at least one landline telephone service, at least one wireless cellular-type telephone service, at least one cellular-type wireless telephone and at least one standard telephonic type communication device through standard building interior telephone cable.

Abstract: An apparatus for interfacing at least one landline telephone service, at least one wireless cellular-type telephone service, at least one cellular-type wireless telephone and at least one standard telephonic type communication device through standard building interior telephone cable.

Abstract: An apparatus for interfacing at least one landline telephone service, at least one wireless cellular-type telephone service, at least one cellular-type wireless telephone and at least one standard telephonic type communication device through standard building interior telephone cable.

Abstract: An apparatus for interfacing at least one landline telephone service, at least one wireless cellular-type telephone service, at least one cellular-type wireless telephone and at least one standard telephonic type communication device through standard building interior telephone cable.

Abstract: An apparatus for interfacing at least one landline telephone service, at least one wireless cellular-type telephone service, at least one cellular-type wireless telephone and at least one standard telephonic type communication device through standard building interior telephone cable.

Abstract: An apparatus for interfacing at least one landline telephone service, at least one wireless cellular-type telephone service, at least one cellular-type wireless telephone and at least one standard telephonic type communication device through standard building interior telephone cable.

Abstract: An apparatus for interfacing at least one landline telephone service, at least one wireless cellular-type telephone service, at least one cellular-type wireless telephone and at least one standard telephonic type communication device through standard building interior telephone cable.

Abstract: An apparatus for interfacing at least one land-line telephone service, at least one wireless cellular-type telephone service, at least one cellular-type wireless telephone and at least one standard telephonic type communication device through standard building interior telephone cable.

Abstract: An apparatus for interfacing at least one land-line telephone service, at least one wireless cellular-type telephone service, at least one cellular-type wireless telephone and at least one standard telephonic type communication device through standard building interior telephone cable.

Abstract: A battery operated standby inverter power supply uses an electromechanical relay switching network to connect and disconnect line power between input and output terminals. An overcurrent relay pulser rapidly opens the switching system relay contacts upon transition to battery mode, and a breakover diode network accelerates field collapse in the relay coil attendant to reversion of the relay to its normally closed condition attendant to each battery to line transition. A fault detector establishes acceptable line voltage thresholds, the exceeding of either of which triggers operation from line to battery mode. These triggering thresholds are automatically pulled closer together during initial system startup. During system startup and attendant to each battery-to-line transition, the fault detector is momentarily latched to indicate acceptable line voltage conditions, thereby removing its susceptibility to transient retriggering.

Abstract: A battery operated standby inverter power supply uses an electromechanical relay switching network to connect and disconnect line power between input and output terminals. An overcurrent relay pulser rapidly opens the switching system relay contacts upon transition to battery mode, and a breakover diode network accelerates field collapse in the relay coil attendant to reversion of the relay to its normally closed condition attendant to each battery to line transition. A fault detector establishes acceptable line voltage thresholds, the exceeding of either of which triggers operation from line to battery mode. These triggering thresholds are automatically pulled closer together during initial system startup. An overload detector senses the load current in line mode and prevents actuation to battery mode if the load connected to the power supply output exceeds the rated current value of the inverter.

Abstract: A circuit breaker for the protection of electrical devices connected thereto provides immediate detection of power failure even if such failure occurs during the times of line voltage axis crossings. This is accomplished by providing and monitoring the amplitude of a synthesized waveform representing a full-wave rectified replica of the line voltage, combined with a 90.degree. phase-shifted full-wave rectified replica of the line voltage waveform. The composite waveform has a peak-to-peak excursion of approximately 20% about a DC average without nulls. The phase-shifted waveform replicas are produced by a phase shift network configured to provide a strong differentiating function, thereby causing the phase-shifted replicas to reflect virtually instantaneously failure of the power line voltage, and in particular failure in the vicinity of an axis crossing, by an immediate change in amplitude. Transient overvoltages and undervoltages are similarly reflected.

Abstract: A battery-operated standby power supply includes a circuit for the detection of failures in A.C. power line voltage provides immediate detection of power failure even if such failure occurs during the times of line voltage axis crossings. This is accomplished by providing and monitoring the amplitude of a synthesized waveform representing a full-wave rectified replica of the line voltage, combined with a 90.degree. phase-shifted full-wave rectified replica of the line voltage waveform. The composite waveform has a peak-to-peak excursion of approximately 20% about a DC average without nulls. The phase-shifted waveform replicas are produced by a phase shift network configured to provide a strong differentiating function, thereby causing the phase-shifted replicas to reflect virtually instantaneously failure of the power line voltage, and in particular failure in the vicinity of an axis crossing, by an immediate change in amplitude. Transient overvoltages and undervoltages are similarly reflected.

Abstract: An electrical controller, such as a controller timer for a home lighting circut, is connected so that a power switch like a triac controlled thereby replaces a conventional toggle switch operating in conjunction with another toggle switch in series therewith which can operate the controller. The timer is continuously coupled to the AC power system by permanent connections between the movable pole of the remaining toggle switch station and the load terminal of the triac of the controller and the power system. A stationary contact of the switch forms a control signal terminal which extends to a control input terminal of the controller. The controller may also include a depressible pushbutton or other on-off control switch which when successively operated generates pulses which toggle a control circuit to alternately render the triac conductive and non-conductive, and to program a controller-timer.

Abstract: An electrical timer automatically actuates an output electrical load device such as an electric light according to a program stored as markers in a memory unit over a 24-hour interval, whereupon the program is recycled. By actuating one or more electric lights within an empty dwelling, an illusion of occupancy is thus conveyed to an observer. In the preferred form of the invention the memory unit is a recirculating shift register. A daily variability of the timer output is provided to prevent precise daily replication of the load device duty profile. One version causes the program output to be delayed by 15 minutes on alternate days by alternately taking the output from the last or the next-to-last storage element of the shift register. The stored duty profile is in 15-minute blocks.

Abstract: A timer system includes a power switch operable to power circuit closing and opening conditions, timing means for identifying various timing segments over a 24-hour period and marker storage means having respective power turn on and off marker storage locations assigned to the time intervals encompassing a 24-hour period. An on-off push button or other on-off control operates the power switch and may act as an aid in setting the markers in the storage means. The timer system may also include a rotatable present time setting dial, also adjustable to different positions representing the different time intervals, and a manually operable timer on-off setting member. For real time programming, control means respond to normal operation of the on-off control during a first 24-hour period, initially to set said markers in the storage locations.

Abstract: One form of the timer is designed to be mounted over and behind a conventional wall switch cover plate and includes a two position timer condition-setting arm, a rotatable and depressible time setting dial knob and an indicator on the front of the cover plate. When the arm is moved to a timer-on position, the indicator flashes to indicate that timer programming is needed. This may be achieved in real time over the first twenty-four hours after a 30 minute play period by depressing the knob acting as an on and off power switch control push button to turn the light circuit on and off in a normal manner. Fast normal programming is achieved by rotating the knob to various time settings and depressing the knob to set ON or OFF markers in timer memory.

Abstract: A control circuit for a power threshold switch, like a power triac, to be connected in series with a load device, at a situs where only one AC power conductor and a conductor extending to the load device is available, is energized from a DC power supply energized from these conductors. The power supply includes a rectifier connected in series with an energy storage means, such as a capacitor, the terminals of which constitute the DC output terminal of the DC power supply, an impedance of much greater resistance than that of the load device and through which the capacitor is charged when the triac is in its non-conductive mode, and preferably a low power control triac shunting the high impedance and triggered momentarily into conduction each half cycle as the applied AC voltage goes through zero when the power triac is to be in its conductive mode, to effect charging of said energy storage means and subsequently the triggering of said power threshold switch into conduction.