Patent attributes
An electronic system for a surgical instrument is disclosed. The electronic system comprises a main power supply circuit configured to supply electrical power to a microprocessor, a supplementary power supply circuit configured to supply electrical power to a sensor, and an over current/voltage protection circuit coupled between the main power supply circuit and the supplementary power supply circuit. The over current/voltage protection circuit comprises a current limit switch. The current limit switch comprises a current resistor coupled to an amplifier, wherein, when the amplifier detects a surge current above a predetermined threshold, the amplifier activates a circuit breaker to interrupt the surge current, and wherein when the surge current is remedied, the supplementary power supply circuit rejoins the main power supply circuit and is configured to supply power to the sensor.
