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Test & Measurement
product catalog
A Greater Measure of Confidence
DC Power Supplies
Technical Information . . . . . . . . . . . . . . . . . . . . . . . 296
selector Guide Programmable DC Power Supplies . . . . . . . . . . . . . 300
selector Guide Battery Simulating DC Power Supplies . . . . . . . . . 301
Single-Channel Programmable
DC Power Supplies
2200-20-5 20V, 5A Programmable DC Power Supply . . . . . . . 302
2200-30-5 30V, 5A Programmable DC Power Supply . . . . . . . 302
2200-32-3 32V, 3A Programmable DC Power Supply . . . . . . . 302
2200-60-2 60V, 2 .5A Programmable DC Power Supply . . . . . . 302
2200-72-1 72V, 1 .5A Programmable DC Power Supply . . . . . . 302
Multi-Channel Programmable
DC Power Supplies
2220-30-1 Programmable Dual Channel DC Power Supply . . 306
2230-30-1 Programmable Triple Channel DC Power Supply . 306
Battery Simulating DC Power Supplies
2308 50W, Fast Transient Response Battery/Charger
Simulating Supply with Analog Output . . . . . . . . . .310
2302 60W, Fast Transient Response
Battery Simulating Supply . . . . . . . . . . . . . . . . . . . . .317
2302-PJ 60W, Fast Transient Response
Battery Simulating Supply with 500mA Range . . . .317
2306 50W, Fast Transient Response
Battery/Charger Simulating Supply . . . . . . . . . . . . . .317
2306-PJ 50W, Fast Transient Response Battery/Charger
Simulating Supply with 500mA Range . . . . . . . . . . .317
2306-Vs 50W, Fast Transient Response Battery/Charger
Simulating Supply with External Triggering . . . . . 323
2303 45W, Fast Transient Response Supply . . . . . . . . . . . 331
DC POWER SUPPLIES
2303-PJ 45W, Fast Transient Response
Battery Simulating Supply with 500mA Range . . . 331
2304a 100W, Fast Transient Response Supply . . . . . . . . . . 331
High Voltage DC Power Supply
248 25W, High Voltage (5kV) Supply . . . . . . . . . . . . . . . 335
1.888.KEITHLEY (U.S. only)
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A Greater Measure of Confidence
295
Technical DC Power Supplies
Information
Programmable DC Power Supplies accuracy and resolution
Historically, the DC power supply user turned potentiometers to set output
DC power supplies provide a regulated DC output to power a component, voltage or current . Today, microprocessors receive input from the user
a module, or a device . A power supply must deliver voltage and current interface or from a remote interface . A digital-to-analog converter (DAC)
that is stable and precise, with minimal noise to any type of load: resistive, takes the digital setting and translates this into an analog value, which is
inductive, low impedance, high impedance, steady-state, or variable . How used as the reference for the analog regulator . The setting resolution and
well the power supply fulfills this mission and where it reaches its limits accuracy values are determined by the quality of this conversion and regu-
are defined in its specifications . lation process .
Technical information: DC power supplies
Technical information: DC power supplies
Power supplies have two main settings, the output voltage and the current Voltage and current settings (sometimes called limits or programmed val-
limit . How they are set in combination with the load determines how the ues) each have resolution and accuracy specifications associated with them .
The resolution of these settings determines the minimum increment in
power supply will operate .
which the output can be adjusted, and the accuracy describes the extent to
Most DC power supplies have two modes of operation . In Constant Voltage which the value of the output matches international standards . In addition
(CV) mode, the power supply controls the output voltage based on the to output settings, there are measurement or readback specifications that
user settings . In Constant Current (CC) mode, the power supply regulates are independent of the output specifications .
the current . Whether the power supply is in CV or CC mode depends on Most DC power supplies provide built-in measurement circuits for meas-
both the user settings and the resistance of the load . uring both voltage and current . These circuits measure the voltage and