Honeywell FSS1500NSR Pressure and Force Sensor Amplifier
The Honeywell FSS1500NSR is a circuit designed to amplify the millivolt output of Honeywell's MICRO SWITCH pressure and force sensors. The circuit employs high input impedance amplifiers, such as the LM108, to minimize input current offset and allow for large input resistors. Two circuit configurations are presented, one with a single amplifier and another with three amplifiers in the first stage and a unity-gain summing amplifier in the second stage. This design reduces common-mode errors and provides accurate signal amplification for industrial applications.