Keithley 2220-30-1 and 2220G-30-1 Programmable Dual DC Power Supplies The Model 2220-30-1 programmable dual channel DC power supply combines two channels of output power to cost-effectively characterise and test a wide range of devices, circuit boards, modules and products that require more than one power source. Each channel is capable of outputting up to 30V and up to 1.5A. The 2220-30-1 offers performance, versatility and ease of use to maximise the information from characterisation or test as quickly and as easily as possible. It performs as effectively in automated test systems as in manual instrument configurations. USB interface is standard, for remote control, and the 'G' version adds a GPIB interface.