it can be a shunt regulator, and there is even a circuit for its use as a switching regulator in the data sheet. To fully understand the 723 then is to fully understand low voltage linear regulators.

If it’s DC, the easiest way is to use a shunt resistor and measure ... A pair of linear regulators then drop down this voltage to +15 / -15 V required for the trasducer and op-amp.

The circuit has a shunt regulator, internal voltage and bias current generators, built-in power-on-reset and oscillator. The core is easily retargeted to any other CMOS technology with R-poly devices.

However, shunt mode methods can be problematic. Diverting high voltage to ground may damage equipment because all electronic devices are interconnected via ground. In addition, MOVs can stop ...