9758 Electronic Load0 pages

Time Electronics

9758 DC Electronic Load
• Constant current, resistance, conductance,
voltage, and power modes
• Wide voltage and current range:
0 to 80 volts and 0 to 80 amps
• 300 watts continuous dissipation at 40°C
• Ten turn controls for level setting
• Built-in transient generator – variable slew
• Current monitor output for waveform viewing
• Variable drop-out voltage for battery testing
SOFTWARE

• Analogue remote control capability

DESCRIPTION
The 9758 electronic load is a precision instrument that works by putting a required DC load across a power
source under test. It can be also be used to investigate the behaviour of many different types of power source
such as batteries, solar cells, fuel cells or wind generators, as well as electronic power supply units.
FEATURES
MULTIPLE MODES OF OPERATION
Constant Current
Constant current mode is used for load testing of normal voltage source power supplies and for constant
current discharge testing of batteries. This mode provides rapid measurement of power source regulation
(V/I characteristics).
Constant Voltage
Constant voltage mode is used for load testing of constant current power supplies. The unit operates as a high
power shunt regulator.
Constant Power
Constant power mode simulates a load whose power consumption is independant of the applied voltage.
This is true of many types of equipment that incoporate switchmode regulators. This mode may be
particularly suitable for testing power sources of portable devices such as Lithium-ion batteries.
Constant Resistance
Constant resistance mode simulates a standard resistive load by providing a current drain proportional
to voltage. Settings are displayed in Ohms or milli-Ohms. Unlike fixed resistors or rheostats, the load
provides a precisely controllable resistance with high power dissipation over a wide value range.
Constant Conductance
Constant conductance (CG) mode is also incorporated. As well as showing settings in amps per volt, this
mode provides better resolution when setting very low equivalent resistance values.

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