stepleton
Veteran Member
Posting to "Minis and Mainframes" because I'm guessing that most 1970s IBM fans hang out here. I'm looking for plug and socket components for a system of 24-pin connectors that IBM used for ribbon-cable interconnect in the 1970s. Here is a diagram of such a connector:
And here are some screen-captured images of the cable-end connector from YouTube videos of an IBM 5120 repair by Jerry Walker:
What you find on the end of a power cable is slightly different, but I think the connector itself is compatible. (Don't be fooled by the fact that only one row of holes is visible:
The lighting and the video compression algorithm have erased the rear row of holes. I'm pretty sure this connector is mechanically identical to the other connectors shown.)
I don't have a good picture of the connector on the board side, but I think that these are just regularly-spaced metal pins soldered into the PCB. In other words, it's not a separate component.
Either way, I'd like to get my hands on both polarities of this connector --- or to have a good idea of how to make a DIY substitute. After seeing the CuriousMarc 9825T failure, I'll be designing and building a voltage protection device for the DC power supply lines inside my IBM 5100, and I'll need these connectors in order to non-destructively interpose my device between the power supply and the electronics.
Does anyone know how I might be able to get some of this interconnect hardware, or does anyone know where I can find detailed documentation on the connectors?
Apologies for the off-topic post. Then again, depending on your point of view, the 5100 is neither a mini nor a mainframe, or it's both at the same time!
And here are some screen-captured images of the cable-end connector from YouTube videos of an IBM 5120 repair by Jerry Walker:
What you find on the end of a power cable is slightly different, but I think the connector itself is compatible. (Don't be fooled by the fact that only one row of holes is visible:
The lighting and the video compression algorithm have erased the rear row of holes. I'm pretty sure this connector is mechanically identical to the other connectors shown.)
I don't have a good picture of the connector on the board side, but I think that these are just regularly-spaced metal pins soldered into the PCB. In other words, it's not a separate component.
Either way, I'd like to get my hands on both polarities of this connector --- or to have a good idea of how to make a DIY substitute. After seeing the CuriousMarc 9825T failure, I'll be designing and building a voltage protection device for the DC power supply lines inside my IBM 5100, and I'll need these connectors in order to non-destructively interpose my device between the power supply and the electronics.
Does anyone know how I might be able to get some of this interconnect hardware, or does anyone know where I can find detailed documentation on the connectors?
Apologies for the off-topic post. Then again, depending on your point of view, the 5100 is neither a mini nor a mainframe, or it's both at the same time!