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Monday, April 11, 2011

Saturday, March 25, 2011

Attendees: Ron Williams, Bob Erickson,  Stan Paddock, Jim Hunt, Bill Newman

Jim Hunt researches available devices to replace devices that were used in 1959 when the IBM 1401 was being built.
Ron Crane compares the qualities of one transistor with another.
Ron then built up a capacitor bank to test the phase shift to try to get a an AC power factor of 1.00 from the German IBM 1401.
The waveform for Ron's power test looks good. Or this is the image from Space Invaders.

Bob Edwards continues his work on the IBM model B typewriter.

In the background, Ron Williams continues looking for the read problem on the Connecticut IBM 1401.

Stan Paddock

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