DC Programmable Power Supply

Provides a current of 1 A at 18 V, with a resolution of 0.01 V and typical ripple of 10 mV. This DC power supply has added features to cycle the voltage on and off, to ramp the voltage up or down between the maximum and minimum set, and to change the voltage in steps. A positive offset can be introduced so the ramp can start at a voltage other than zero. Minimum period is 0.1 sec (10 Hz) and the maximum period is 999 seconds.

The digital display has four digits (0.76 cm high) and can display voltage, current, or time. The time is displayed to set the period, duration, or duty cycle.

There are both coarse and fine adjustment knobs. As a safety factor, a maximum current and a maximum voltage can be set to protect your students’ external circuits. The output is voltage-regulated but not current regulated.

The power supply is connected to AC power using a universal power adapter.

Function 1: Constant DC Output

• Monitor voltage or current, or cycle with adjustable time

Function 2: Rectangle Wave

• Programmable maximum voltage
• Programmable minimum voltage
• Programmable period: 0.1–999 s
• Programmable duty cycle: 1–99%, Jitter: ±300 μs
• Monitor voltage or current

Function 3: Ramp

• Programmable maximum voltage
• Programmable minimum voltage
• Programmable period: 0.1–999 s
• Programmable ramp direction (ascending or descending)
• Alternating ramp direction option (triangle wave)
• Programmable number of cycles: 1 to 999, or infinite
• Monitor voltage or current

Function 4: Stair

• Programmable maximum voltage
• Programmable step voltage: 0.01–18.00 V
• Programmable minimum voltage
• Programmable step time: 0.1–999 s
• Programmable stair direction (ascending or descending)
• Alternating stair direction option
• Programmable number of cycles: 1 to 999, or infinite
• Monitor voltage or current

Function 5: SET MAX

• Programmable voltage limit: 0.01–18.00 V
• Programmable maximum current: 0.010–1.050 A
• Automatic shutdown timer: 0.01–99.99 hours
• “Hidden” Global Maximum voltage: 0.01–18.00 V (remembered after power off)

Function 6: PROGRAM Custom program entry

• 3–99 programmable voltage points (remembered after power off)
• Edit modes: append, insert, delete point, delete entire program

Function 7: PLAY Custom program output

• Programmable scale factor: 1–100% of programmed voltage
• Programmable step-time: 0.1–999 s
• Step-style and vector-style options
• Programmable play direction (forward or backward)
• Alternating play direction option
• Programmable number of cycles: 1 to 999, or infinite
• Monitor voltage or current