A solid-state delay timed switching circuit includes a delay timing means for delaying the start of an operational sequence. A function timing means is provided for timing the operational sequence, an alarm timing means for timing an audible alarm at the completion of an operational sequence, a power switching means, a power supply and a power turn-off means to de-energize the power switching means.
An apparatus for combination with a standard range having burners thereon and a power line connected thereto is provided and senses the current through the power line for a pre-set level, times the current once the pre-set level is reached, interrupts the current, signals when interruption of the current has occurred and includes controls for controlling the timing and the signalling in the apparatus.
A sound generating device for a jogger has a generator circuit for generating pace signals the frequencies of which are different from each other in correspondence with different tempos and for generating reference clock pulses, a time counter for receiving and counting the reference clock pulses, and circuits for selectively supplying pace signals the frequencies of which are different from each other and which are supplied from the generator circuit. In response to an instruction signal generated by a switching operation, the time counter starts counting. Simultaneously, based on a selected pace signal from the generator circuit, a desired pace sound can be produced.
In a display terminal coupled to a computer and including a plurality of user interrupt devices for interactive communication with the computer, an apparatus for signalling to the user when the computer responds to a user interrupt comprises a counter arranged to measure a specified period of time by counting down to zero from an initial count value loaded from a register, a sensor triggered by the generation of an interrupt to cause the counter to begin measurement of the said specified period of time, and a further sensr coupled to an alarm via a logic gate to provide an audible signal only when the period of time between the generation of the interrupt and the computer response exceeds the specified period of time measured by the counter.
An electric range override timer unit including an electrically controllable power interrupt circuit positioned between a conventional male power plug adapted for connection with an existing electrical wall socket and a socket assembly adapted for receiving the male plug from an existing electric range; a timer unit in electrical connection with the power interrupt circuit, the timer unit having a timing mechanism having a predetermined maximum time period for sending a control signal to the power interrupt circuit for causing the power interrupt circuit to conduct electrical current between the conventional male power plug and the socket assembly; and a mounting bracket having a first portion secured to the timer unit and a second portion adapted for multiple connecting modes to an existing electric range.
