A transmitter in a process control system includes isolation circuitry which isolates transmitter electronics from a sensor bridge circuit. The isolation circuitry includes high impedance isolators in series with high impedance buffers to electronically isolate the transmitter electronics from the bridge....http://www.google.es/patents/US5610552?utm_source=gb-gplus-sharePatente US5610552 - Isolation circuitry for transmitter electronics in process control system
Isolation circuitry for transmitter electronics in process control system
