Artifact Details Title Dynamic timer power pack Catalog Number 102728562 Type Physical object Description This object contains a transformer, a vibrator, capacitors, vacuum tube, tube diode and a fuse. Connections on top of the unit are marked "COIL LO-V", "COIL HI-V", "COM" AND "CONT". There is a 6-round prong connector at the end of the cord. Manufacturer IBM Dimensions overall: 6 1/2 in x 3 1/8 in x 3 3/4 in Category Test equipment Credit Gift of Museum of American Heritage Lot Number X3737.2007