Instruction manual

1 GENERAL INFORMATION
1.1 INTRODUCTION
This manual contains instructions for the operation and maintenance of the BOS/S
100, 200, 400 Watt Bi-polar operational Source/Sink Power Supply series
manufactured by Electronic Measurements, Inc. of Neptune, NJ.
The BOS/S is a Bipolar Operational Source/Sink Amplifier, a true four quadrant power
supply with high bandwidth capabilities. It utilizes the latest MOSFET technology for
high slew rates and high efficiency.
The BOS/S power supplies have been developed for applications where high stability,
accuracy, fast response times and bipolar capabilities are required. It is well suited for
laboratory, test and measurement applications.
The BOS/S has two modes of operation, constant voltage and constant current. The
modes of operation are selected by switch position (Item 6, Dwg. No. 02-469-101).
The BOS/S also provides dynamic limiting of voltages and current regardless of which
mode of operation is selected.
1.2 SAFETY PRECAUTIONS
All EMI power supplies are designed for safe operation. This instrument received
comprehensive mechanical and electrical inspection prior to shipment. Nevertheless,
certain safety precautions must be observed. Only technically competent personnel
familiar with the principles of electrical safety should operate this supply. To prevent
fire or shock hazard, the power supply should not be exposed to water or moisture.
Electrical safety should be maintained at all times.
Lethal voltages are developed within the power supply’s enclosure whenever it is
energized. Therefore, the power supply must always be unplugged prior to removing
the cover. If the input to power supply is hardwired, the circuit breaker must be
secured and the line fuses removed.
Of course, dangers are inherent in high voltage equipment. However, a power supply
with a low voltage is also potentially dangerous considering the amount of energy
(current) the supply is capable of delivering. In addition to the steady state energy
available, power supplies are typically terminated by very large capacitors, which can
deliver huge surge currents capable of vaporizing metallic objects such as
screwdrivers or jewelry. This could result in molten metal being sprayed. Proper care
and judgment must always be observed.
1.3 RETURNING EQUIPMENT
This instrument received comprehensive mechanical and electrical inspection before
shipment. Immediately upon receipt from the carrier, and prior to operation, this
instrument should be visually inspected for any damage that may have been incurred
during shipment.
If such inspection reveals internal or external damage in any way, a claim should be
filed with the carrier. A full report of the damage should be furnished to the claim
agent and forwarded to Electronic Measurements, Inc., noting the model and serial
number of the equipment. EMI will determine the proper course of action and arrange
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83-469-001 Rev. B