Abstract: An apparatus, a method, and computer-implemented media.

Abstract: A circuit for monitoring the health of the transformers is disclosed. In an implementation, the circuit includes a transformer that provides an input signal and a pulse generator that generates a pulse signal. An analog-to-digital converter receives a combined signal that includes the input signal and the pulse signal, and the analog-to-digital converter converts the combined signal to a digital representation of the combined signal. The circuit includes a first digital filter and a second digital filter that are connected to the analog-to-digital converter. The first digital filter reconstructs an amplitude characteristic of the input signal, and the second digital filter reconstructs the pulse signal. The circuit also includes a controller that indicates a short circuit or an open circuit associated with the transformer based upon a value of the reconstructed pulse signal.

Abstract: A system includes a divider on a first side of electrically isolated circuitry for receiving a clock signal having a characteristic frequency and dividing the clock signal by a characteristic value. The system also includes an optical link coupled with the divider for receiving the divided clock signal and transmitting the divided clock signal from the first side of the electrically isolated circuitry to a second side of the electrically isolated circuitry. The system further includes a phase-locked loop on the second side of the electrically isolated circuitry. The phase-locked loop is coupled with the optical link and configured to receive the divided clock signal from the optical link and generate a second signal at a multiple of a characteristic frequency of the divided clock signal so that the second signal comprises the characteristic frequency of the clock signal received by the divider circuitry.