BK Precision 1760A, Инструкция по эксплуатации

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14
OPERATING INSTRUCTIONS
SAFETY PRECAUTIONS
CAUTION
Avoid contacting the heat sink at the rear of the
power supply. When the unit is providing large
amounts of current at any or all of its outputs, the
heat sink can become very hot. Contacting the
heat sink when it is hot could result in skin burns
or damage to the equipment in contact with them.
Use only a polarized 3-wire AC outlet. This as-
sures that the power supply chassis, case, and
ground terminal are connected to a good earth
ground and reduces danger from electrical shock.
There may be great danger of electrical shock if
the power supply output is connected to an exter-
nal high voltage. Some equipment being powered
may contain high voltage and present a shock
hazard. Observe caution. If the power supply
output is floated (referenced to a voltage rather
than earth ground) turn off the power supply and
the equipment under test when making connec-
tions. Never float the power supply to a potential
greater than 100 volts peak with respect to earth
ground.
EQUIPMENT PRECAUTIONS
Avoid using the power supply in ambient temperatures above
+40° C. Always allow sufficient air space around the heat sink at
the rear of the power supply for effective radiation to prevent
internal heat build-up.
Although the power supply is protected against reverse polarity
damage, the circuit being powered may not include such protection.
Always carefully observe polarity; incorrect polarity may damage
the equipment under test.
Do not exceed the voltage rating of the circuit being powered.
Many transistors and integrated circuits will not withstand voltage
of 30 volts.
There is no need to worry about voltage spikes or overshoot
damaging the equipment under test. The voltage between the output
terminals of the power supply never exceeds the preset value as the
POWER switch is turned on or off.
INDEPENDENT USE OF “A” OR “B” SUPPLY
The
“A”
and
“B”
supplies each provide a 0-to-30 volt output at
up to 2.0 amps. This procedure covers the use of the
“A”
and
“B”
supplies only when they are used independently from one another.
When used in the
INDEP endent operating mode, the operating
controls of the two power supplies are completely independent and
either supply can be used individually or both can be used
simultaneously. Basic operation is covered here. Several variations
are covered in the APPLICATIONS section of this manual.