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TM 11-6625-2958-14&P
SECTION I
GENERAL INFORMATION
Figure 1-1.
DC Power Supply, Model 6259B, 6260B, 6261B, 6268B, or 6269B
1-1 DESCRIPTION
1-2 This power supply, Figure 1-1, is completely
transistorized and suitable for either bench or relay
rack operation. It is a well-regulated, constant
voltage/constant current supply that will furnish
full rated output voltage at the maximum rated out-
put current or can be continuously adjusted through-
out the output range. The front panel CURRENT con-
trols can be used to establish the output current
limit (overload or short circuit) when the supply is
used as a constant voltage source and the VOLTAGE
controls can be used to establish the voltage limit
(ceiling) when the supply is used as a constant cur-
rent source. The supply will automatically cross
over from constant voltage to constant current oper-
ation and vice versa if the output current or voltage
exceeds these preset limits.
1-3 The power supply contains an added feature
for protection of delicate loads. A limit can be set
on the output voltage. If this limit is exceeded the
output will automatically be shorted.
1-4 The power supply has rear output terminals.
Either the positive or negative output terminal may
be grounded or the power supply can be operated
floating at up to a maximum of 300 volts above
ground.
1-5 Output voltage and current are continuously
monitored on two front panel meters.
1-6 TerminaIs located at the rear of the unit allow
access to various control points within the unit to
expand the operating capabilities of the power sup-
ply. A brief description of these capabilities is
given below:
a. Remote Programming. The power supply
output voltage or current may be programmed (con-
trolled) from a remote location by means of an ex-
ternal voltage source or resistarice.
b. Remote-Sensing. The degradation in regu-
lation which occurs at the load due to voltage drop
in the load leads can be reduced by using the pow-
er supply in the remote sensing mode of operation.
c. Auto-Series Operation. Power supplies
1-1