Monthly Archives: January 2010

RS-485 Signal Loss Detection

Posted on January 28, 2010 by Adam
RS-485 Signal Loss Detection

The safety shutdown and fault isolation protocol are critical in many telecommunication, industrial, data processing system and industrial. To share data between communication processor or single-board computers, actuator and sensors, the fault detection system uses RS-485. This RS-485 uses two … Continue reading →

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Status Panel Driver for Industrial Machines

Posted on January 25, 2010 by Adam
Status Panel Driver for Industrial Machines

This is a status panel driver circuit. This circuit is used to turn on lamps or LEDs in a graphic panel that represent faults, action, and status of an industrial machine. This circuit has advantages compared with other graphic status … Continue reading →

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FETVM-FET Voltmeter

Posted on January 25, 2010 by Adam
FETVM-FET Voltmeter

This is a circuit of FETVM-FET Volmeter. The function of the VTVM is replaced by the FTEVM while at the same time ridding the usual line cord instrument. This circuit can allow a 0.5 volt scale range because drift rate … Continue reading →

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