The Tektronix 1105 Power Supply is a portable and rugged power supply that can operate from either internal batteries (not included) or from an external DC sources. The 1105 is suitable for powering virtually any portable oscilloscope. The 1105 has an approx peak of 108 V when operating from a 24 V external source, or a 22 V internal battery. It has a peak of approx 137.5 V when operating on 30 V external, or 28 V internal power.

SPECIFICATIONS:
• Voltage: 108 VAC from 24 VDC 127 VAC from 28 VDC
• Frequency: Squarewave 60 Hz ± 10%
• Operating Time: 140 W hours
• Two standard 115 V Outlets
• Charging Source: 100 VAC to 130 VAC 48 Hz to 440 Hz"