Operation Instructions - Elenco Electronics XP-660 Instruction Manual

Counter Output

Operation Instructions

1) Check the voltage rating of the equipment to be
powered. Care must be taken not to exceed this
rating.
2) Plug the line cord into a 120V 60Hz AC outlet.
3) Adjust the voltage control to the desired voltage.
Load variation will have practically no effect on
the voltage setting due to the special regulation
circuit.
4) Connect the positive lead of your equipment to
the red output terminal marked (+) and the
negative lead to the black terminal marked (–).
5) Adjust the current limiting control to maximum
counter-clockwise position.
equipment on. The overload light will glow if
excessive current is drawn. Increase this control
until the light goes out and stays out during
normal use. Your equipment is now protected
from high current surges. An alternate method
of adjusting current limiting is to short the output
and adjust the current to a desired value.
Remove the short. This will now limit the current
to your setting.
6) Meters can be switched to read voltage or
current.
Figure 3 Dual Slope A/D Converter
Switch your
-4-
Elenco ® Models XP-660 and XP-760 are extremely
versatile power supplies.
completely isolated from each other. This means
that they have separate grounds.
ground terminal of one supply to the positive
terminal of the other, you can obtain an output of 0-
40V @ 1 ampere. Also by stacking the 5V terminal
you can increase the output to 45V.
The 0-20V supplies have an adjustable current
overload feature, a red LED will light when current
limiting is activated. The current limit control adjusts
the maximum current the supply will allow before
automatically turning down the output voltage. This
limit is between 50mA to 1 amp. You can set it to
your desired limit by shorting out the output terminal
and adjusting the current limit control to the desired
current. Remove the short and attach the load. The
maximum current drawn will be per your setting.
All three power supplies are protected against
external shorts. The 0-20V supplies are protected
by the current limiting feature.
shorted the maximum current drawn will depend on
the limit control setting. The 5V supply features a
current foldback circuit. This circuit will limit the
output current to less than 1 amp. When the short
is removed, the output voltage will automatically
reset to 5V.
All supplies are
By tying the
If the output is