Wideband Strain Gauge Signal Conditioner with Boosted Excitation Voltage

When the 19th pin of the broadband strain signal conditioner 1B31 is connected to the 20th pin, the excitation voltage UEXC output by the programmable bridge excitation source is 10V. To increase UEXC to 10~15V, a resistor REXT must be connected between the EXC ADJ terminal and the SENSE- terminal, as shown in the circuit. The REXT value is determined by the following formula (the unit of resistance is kΩ):

In the formula,