erated
and vehicular equipment, while its use for
testing subassemblies is very similar to that de-
scribed for servicing modules.
This power supply is particularly well suited for
manufacturing. applications because of its ease of
operation and the speed
at
which it will accomplish
its
job,
in
addition to its other features. When load
current or total power dissipation are among the
main characteristics to be measured, the total load
current
and
voltage are instantly displayed on the
two meters.
The current limit can be adjusted so
that all units which do not meet the load current
specification will cause the overload to trip, and
the unit can be rejected.
ELECTRONICS
DESIGN ENGINEERING
The technician or engineer working in an
engi-
neering laboratory requires a power supply to
power prototype and experimental circuits. This
power supply is ideal because it monitors both cur-
rent and voltage simultaneously, limits current to
protect the circuit, is adjustable over such a wide
range, and has excellent regulation and very low
ripple.
Use of the instrument in an engineering laboratory
is very similar to that previously described for serv-
icing electronics equipment and modules, except
that lower currents may be prevalent when power-
ing single stage experimental circuits. The current
limiting feature is very valuable in this application
because it protects the unproven circuit from
damage.
ELECTRONICS EDUCATION
The student in an electronics school may use the
power supply for powering equipment and circuits
as previously described for all other applications.
In addition, the power supply will be used in the
laboratory classroom to conduct experiments in fun-
damental electronics. In learning
Ohm's
law, for
example, the relationships of resistance, current and
voltage are vividly demonstrated by the use of the
power supply. Being able to observe both the cur-
rent and voltage meters simultaneously is a great
aid in such experiments. Figure 8 shows typical
examples of the types of experiments and exercises
that may be conducted.
!
POWER SUPPLY
OBSERVE
OHMS
LAW
BASIC VOLTAGE DIVIDER
R1
BASIC CURRENT DIVIDER
*xa
x1+12'11N
POWER SUPPLY
SERVE
STIC
OF
DIODE
MEASURE
VDI
&
I
VARY
EIN
CHARACTERISTIC
OF
ZENER
DIODE
xi--~$~;:-~I
Rl
Figure
8.
Typical Laboratory Classroom Experiments Using The Power Supply
11
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