high-voltage interface
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Tags: high voltage supply
The circuit uses fast transimpedance amps, “floated” at 70V. Two “virtual-zener” circuits step down the high-voltage signals for subsequent processing in a ground-referred differential-amplifier stage (Figure 1). The circuit drops exactly 65.58V dc with the component values shown, notwithstanding errors arising from op-amp offset voltages and resistor tolerances.
Source: http://www.edn.com/article/CA282636.html
