AC Power Supplies

 
B&K Precision 9801 - 300 VA Programmable AC Power Source
  • Output Capacity: 300 VA (300 WattsWhat's This?)
  • Meter Type: Digital
  • Variable Frequency: Yes
  • Programmable: Yes
  • Linear/Switching: Linear
  • Outputs: Single

Your Price: $2,570.00

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B&K Precision 9803 - 750 VA Programmable AC Power Source
  • Output Capacity: 750 VA (750 WattsWhat's This?)
  • Meter Type: Digital
  • Variable Frequency: Yes
  • Programmable: Yes
  • Linear/Switching: Linear
  • Outputs: Single
BK 9803B 750 VA Programmable AC Power Source - NO GPIB
  • Output Capacity: 750 Watts
  • Meter Type: Digital
  • Programmable: Yes
  • Linear/Switching: Linear
  • Outputs: Single
  • Voltage Output 1: Variable
BK 9805B 1500 VA Programmable AC Power Source - NO GPIB
  • Output Capacity: 1500 VA (1500 WattsWhat's This?)
  • Meter Type: Digital
  • Variable Frequency: Yes
  • Programmable: Yes
  • Linear/Switching: Linear
  • Outputs: Single
B&K Precision 9832B - Programmable AC Power Source
  • Output Capacity: 2000 VA (2000 WattsWhat's This?)
  • Programmable: Yes
  • Max Voltage Output 1: 300 V
  • Max Current Output 1: 20 A
  • Warranty: 3 YEARS
  • Product Weight: 52.9 LBS

Your Price: $6,850.00

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B&K Precision 9833B - Programmable AC Power Source
  • Output Capacity: 3000 VA (3000 WattsWhat's This?)
  • Programmable: Yes
  • Max Voltage Output 1: 300 V
  • Max Current Output 1: 30 A
  • Warranty: 3 YEARS
  • Product Weight: 52.9 LBS

Your Price: $8,620.00

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B&K Precision 1655A - 150V 3A AC Power Supply, 110VAC input only
  • Meter Type: Analog
  • Programmable: No
  • Linear/Switching: Linear
  • Outputs: Single
  • Voltage Output 1: Variable
  • Max Voltage Output 1: 130 V

List Price: $729.00

Your Price: $585.81

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B&K Precision 9805 - 1500 VA Programmable AC Power Source
  • Output Capacity: 1500 VA (1500 WattsWhat's This?)
  • Meter Type: Digital
  • Variable Frequency: Yes
  • Programmable: Yes
  • Linear/Switching: Linear
  • Outputs: Single
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AC Power Supplies

Power Supplies deliver electric power to a device or circuit (Electrical Load), usually by stepping down a higher voltage. AC Power Supplies step down AC Voltages. For example, 220 VAC to 24 VAC. Every power supply has an input or supply power and converts it by various methods to meet the demand from the electrical load. Power supplies are said to be Regulated by controlling the output voltage or current to a constant value, even if the load demand current or the supply power varies. At the heart of any power supply is a Transformer, which converts the supply power to the output power to the load.

NOTE: For AC Adapters and chargers for portable instruments, please visit our accessories section:
Products > Accessories > Batteries and Chargers

How to select an Adjustable Power Supply. Consider the following:

Know your input supply voltage. Check to make sure the power supply will work with the supply voltage. Some are universal, meaning they will work over a large range like 100-240 VAC, others have an external or internal switch for 110 VAC/230 VAC operation. You may need to look in the instruction manual to be sure.

Consider a multiple output power supply
  • Second and third (sometimes even fourth) output options reduce bench space and cost of having additional power supplies. When selecting multiple output power supplies read the details of the specifications. The additional outputs may be limited by the overall wattage of the power supply (i.e. you may not be able to operate all channels at maximum voltage and current simultaneously).
  • Look at whether the additional channels are adjustable. Often the third and fourth outputs are fixed or limited adjustment.
  • Look at the convenience of using the display. Some models will display voltage and current for all channels simultaneously.
  • Series and Parallel Operation permits the output channels.
    • Tracking series operation doubles the Voltage capacity by internally connecting CH1 (Master) and CH2 (Slave) in serial and combining the output to a single channel. CH1 (Master) controls the combined Voltage output level.
    • Parallel operation, for example, doubles the current capacity by internally connecting CH1 (Master) and CH2 (Slave) in parallel and combining the output to a single channel with CH1 controlling the combined output.
Consider a Programmable Power Supply. Programmable power supplies can be remotely controlled by an input signal, trigger, or PC (by USB, RS-232, or GPIB communications) for automated use. They are often used in manufacturing and laboratory applications because of their flexibility. Some have multiple outputs.

Do you need a stepped pattern or PC communications? If you use LabVIEW, consider getting a programmable power supply with LabVIEW drivers even if not required for the immediate application. Have the capability for future applications. Some offer password protections for settings useful in manufacturing and other applications to prevent changes.

Check the analog or digital display; display resolution; accuracy; ripple and noise; and recovery time specifications.

Look for common power supply protections in the specifications. They will protect the power supply and the load being connected.
  • Over current
  • Over voltage
  • Over temperature protection
  • Reverse polarity
Remote Sensing. Connections for one or all channels called remote sense terminals that compensate for voltage drops in the power supply leads. This helps to ensure that the correct voltage is delivered accurately to the load terminals of the DUT. Many multi-channel power supplies do not provide remote sensing, which degrades from overall system accuracy.


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