HP 6960A Operating And Service Manual page 8

IvIode I 6960 A
Section 1
current to volues selected by
0
front ponel control. Accidental damaging of
expensive components by excessive current can thus
be
reduced to a minimum,
if the CURRENT LIMIT control is set to a value just above the normal operating
current of the external circuit. Another important appl ication of the Model 6960A
Power Supply is in electronic test systems where various fixed voltages have to
be
produced sequentially with a high degree of reproducabil ity. This can be achieved
because the output voltage of th is supply may
be
programmed by an externally
connected fixed resistor or a series of same. The output voltage will then
be
pro-
portional to the value of this resistor; changing the resistor in predetermined
steps will have corresponding effects on the output voltoge.
Both output terminals of the power supply are insulated from chassis ground. Either
terminal may be grounded as high as 400 V from ground. It is therefore possible
to connect a number of supplies in series to obtain higher voltages than 36 V.
If more current than 600 mA is needed, there is the possibi Iity of operating several
power suppl ies in parallel.
Remote sensing can be used for minimizing the effect of supply lead resistiance
and thus providing an exactly regulated voltage at the supplied circuit regardless
of lead length.
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