Input redundant circuit
AssigneeAstec International Limited
InventorChung Yan Cheng
Life of this patent
Estimating the term…
Abstract
An input redundant circuit according to the present disclosure may include: a core power supply unit; a first input port connected to a first input voltage; a second input port connected to a second input voltage; a relay unit connected to the first input port and the second input port to supply one of the first input voltage and the second input voltage to the core power supply unit; and a surge current limiting unit coupled to the relay unit, configured to limit a surge current generated when the relay unit is switched between the first input voltage and the second input voltage.
Claims17
An input redundant circuit, comprising:
- a core power supply;
- a first input port for receiving a first input voltage;
- a second input port for receiving a second input voltage;
- a relay connected to the first input port and the second input port to selectively connect and disconnect the first input voltage and the second input voltage to the core power supply;
- a boosting circuit to boost one of the first input voltage and the second input voltage connected by the relay;
- a control circuit configured to disable the boosting circuit before the relay disconnects one of the first input voltage and the second input voltage from the core power supply;
- and
- a surge current limiting circuit coupled to the core power supply, and configured to limit a surge current generated when the relay is switched between the first input voltage and the second input voltage.
Dependencies are inferred from the claim text.