Abstract: A sensor control arrangement may comprise a host controller, a remote sensor interface, a power/data bus extending between the host controller and the remote sensor interface, and an electromagnetic sensor configured to receive an AC signal from the host controller via the power/data bus, and send an a sensor signal to the remote sensor interface via the power/data bus.

Abstract: A sensor control arrangement may comprise a host controller, a remote sensor interface, a power/data bus extending between the host controller and the remote sensor interface, and an electromagnetic sensor configured to receive an AC signal from the host controller via the power/data bus, and send an a sensor signal to the remote sensor interface via the power/data bus.

Abstract: A switch drive and control arrangement may comprise a first transformer configured to receive a control signal, a second transformer configured to receive a clock signal, and a demodulator configured to receive the control signal and the clock signal from a switch controller, via the first transformer and the second transformer. The demodulator may be configured to output a demodulated signal in response to the control signal and the clock signal. A signal fault detector may be provided to determine a fault in at least one of the control signal and the clock signal. A switch may be turned off in response to a fault being detected in at least one of the control signal or the clock signal.

Abstract: A frequency monitoring circuit includes a monitoring lead, a D-type flip-flop, and a one-shot. The D-type flip-flop has a switchable logic state, a clear input, and a clock input. The one-shot has an input and an output connected to the D-type flip-flop clear input. The monitoring lead connects the one-shot input to the latch clock input for switching the logic state of the D-type flip-flop based on change in voltage applied to the monitoring lead.

Abstract: A circuit for converting variable frequency generated AC electric power to DC electric power for use on loads comprises a transformer-rectifier unit to convert a generated AC electric power to DC electric power. A tap senses the converted DC power downstream of the transformer-rectifier unit with a filter, which passes a filtered signal to a control for detecting a fault on the transformer-rectifier unit by passing a higher-order harmonic of the generated AC power as the filtered signal. A tap senses an AC frequency of the generated AC power reaching the transformer-rectifier unit. The sensed AC frequency is utilized to tune the filter, such that the filter will pass the higher order harmonic, as the higher order harmonic varies with variation in the AC frequency. A power system is also disclosed.

Abstract: A circuit for converting variable frequency generated AC electric power to DC electric power for use on loads comprises a transformer-rectifier unit to convert a generated AC electric power to DC electric power. A tap senses the converted DC power downstream of the transformer-rectifier unit with a filter, which passes a filtered signal to a control for detecting a fault on the transformer-rectifier unit by passing a higher-order harmonic of the generated AC power as the filtered signal. A tap senses an AC frequency of the generated AC power reaching the transformer-rectifier unit. The sensed AC frequency is utilized to tune the filter, such that the filter will pass the higher order harmonic, as the higher order harmonic varies with variation in the AC frequency. A power system is also disclosed.

Abstract: A frequency monitoring circuit includes a monitoring lead, a D-type flip-flop, and a one-shot. The D-type flip-flop has a switchable logic state, a clear input, and a clock input. The one-shot has an input and an output connected to the D-type flip-flop clear input. The monitoring lead connects the one-shot input to the latch clock input for switching the logic state of the D-type flip-flop based on change in voltage applied to the monitoring lead.

Abstract: A control and arbitration unit for use in a remote terminal coupled to a system bus over which data encoded in military standard 1553B format is transmitted manages the flow of data between a local processor, a remote terminal interface coupled to the system bus and a local memory so that data transfers occur in an orderly fashion.