The TOELLNER 8840/50 series offer single and dual output power supplies with total power up to 320 W. The 8840/50 series have analogue, GPIB and RS232 interfaces available as options. Both voltage and current are adjusted with wear-free spinwheels. The 8840/50 offers 100 program memories for storing setups, analogue control (optional), optional rear panel outputs and 19" rack mount kit.