Keithley 228A Programmable Voltage/Current Source

4 Quadrant Operation - The Keithley 228A is capable of bipolar source or sink up to a full 100 watts without derating, permitting it to act as a voltage or current supply or as an active load.

Product Info

100 watt source or sink
< 1ms transient recovery
Built-in voltage and current monitors

As a Constant Voltage Source

Output			Compliance (Source or Sink)
Range	Maximum	Resolution	Maximum	Resolution
100 V	± 101.0 V	100 mV	± 1.010 A	1 mA
			± .1010 A	100 µA
10 V	± 10.10 A	10 mV	± 10.10 A	10 mA
			± 1.010 A	1 mA
			± .1010 A	100 µA
1 V	± 1.010 A	1 mA	± 10.10 A	10 mA
			± 1.010 A	1 mA
			± .1010 A	100 µA

Output Resistance (maximum)
- 100 V Range: 10 m ohms.
- 10 V Range: 100 µ ohms.
- 1 V Range: 100 µ ohms.
Output Inductance - 100 µ H typical
Sensing - REMOTE or LOCAL

As a Constant Current Source

Output			Compliance (Source or Sink)
Range	Maximum	Resolution	Maximum	Resolution
10 A	± 10.10 A	10 mA	± 10.10 V	10 mV
			± 1.010 V	1 mV
1 A	± 1.010 A	1 mA	± 101.0 V	100 mV
			± 10.10 V	10 mV
			± 1.010 V	1 mV
0.1 A	± 0.1010 A	100 µA	± 101.0 V	100 mV
			± 10.10 V	10 mV
			± 1.010 V	1 mV

Output Resistance (min)
- 10 A Range: 10⁴ ohms
- 1 A Range: 10 ⁵ ohms
- 0.1 A Range: 10⁶ ohms
Output Capacitance - 0.2 µ F typical
Output Load - Must be non-inductive

Current Monitor Output

Scale Factor - 1 V = 100% of range
External Modulation
Sensitivity - -10V increases magnitude of programmed output by 100% full scales; + 10 V decreases magnitude of programmed output by 100% of full scale
Modulation Frequency - 600 Hz bandwidth
General
Display - Dual 3½-digit LED (0.5 in) displays indicate programmed values in Standby and output values in Operate
Program Memory (battery backed-up) - Stores up to 100 output settings.
Range of Dwell Times: 10 ms to 1000 s
Output Connections - Quick disconnect card with screw terminals for output, modulation, current monitor, and external sense. BNC (chassis isolated) connectors for TRIGGER IN/OUT.

SKU: KEIT-228A