Peter
Created page with "{{Instrument Sidebar |manufacturer=Keithley |model=227 |class=Power supply |series= |summary=Current source |image=Keithley 227 front 1.jpg |caption=Keithley 227 |introduced=1976 |discontinued=(?) |designers= |manuals= * Keithley 227 manual, 1978 }} The '''Keithley 227''' is a current source. The 2271 option adds remote programmability. {{BeginSpecs}} {{Spec | Current | ±1000 mA down to ±1 µA (decade ranges) }} {{Spec | Voltag..."