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190 Keysight E3633A and E3634A User’s Guide
Remote voltage sensing
Normally, a power supply operating in the constant voltage mode achieves its
optimum line and load regulations, its lowest output impedance, drift, and ripple
and noise, and its fastest transient recovery performance at the power supply
output terminals. If the load is separated from the output terminals by any lead
length, some of these performance characteristics will be degraded at the load
terminals - usually by an amount proportional to the impedance of the load leads
compared with the output impedance of the power supply.
With remote voltage sensing, a feature included in the Keysight E3633A and
E3634A power supplies, it is possible to connect the input of the voltage feedback
amplifier directly to the load terminals so that the regulator performs its function
with respect to the load terminals rather than with respect to the power supply
output terminals. Thus, the voltage at the power supply output terminals shifts by
whatever amount is necessary to compensate for the voltage drop in the load
leads, thereby maintaining the voltage at the load terminals constant.
Figure 7-7 Regulated power supply with remote sensing
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