Kepco Series JQE Power Supplies are general purpose,
precision stabilized voltage sources in the "quarter-rack"
configuration. The units are designed to be part of a larger
system and not to be operated as a stand alone bench power
supply. The units are designed to operate immeiately without
any internal adjustments. External points on the outside
case should not be readily available, provided the unit is
in a rack as an integrated OEM subsystem. If it is desired
to switch the AC input power range the units must be
returned to the factory for authorized service personnel to
make the appropriate terminal connections. There are
absolutely no serviceable components within the power supply
that are accessible for nonauthorized personnel to work on.
JQE Power Supplies have linear, full-dissipation series pass
transistors (NPN), driven by anin- tegrated circuit
operational amplifier. A sharp current-limit circuit renders
the power supply completely short-circuit proof. JQE 1/4
Rack Power Supplies may be readily converted to provide
constant current by the addition of an external sensing
resistor and a current control resistor. The output of the
JQE 1/4 Rack Power Supply is remotely programmable. All
necessary connections are available on terminals at the rear
1-5 The compact design of the Kepco JQE 1/4 Rack Series
includes a heatsink of exceptional efficiency, in
combination with a reliable low-noise fan. JQE 1/4 Rack
Power Supplies feature proven design with conservatively
rated components for added reliability.
1-6 JQE Power Supplies are identical in their mechanical
dimensions (Refer to FIG. 1-2) and in their electrical
specifications, except as noted in TABLE 1-1.
1-7 The main chassis frame of the power supply is
constructed from cold-rolled steel, as is the perforate
wrap-around cover. The front panel is manufactured from
aluminum (Refer to FIG. 1-2 for finish).