One More Mystery Board

[Ookpik]

Does anyone know what kind of device this board is from?

The board has the Texas Instruments logo and appears to be from the 1960's.

Any help would be greatly appreciated! 

[bob91343]

Looks like a zener regulator board.  Input to the power resistor, output on the 3 zeners in series and a bypass capacitor.

[ChristofferB]

Probably part of a card cage with multiple pcbs with the same connector on a back plane. The test points on the edge and the angled corners and corner lifting holes support this.

[rsjsouza]

Looks like a zener regulator board.  Input to the power resistor, output on the 3 zeners in series and a bypass capacitor.

Indeed. The color coding should match the Zener's part number: 1N845? (grey-yellow-green? I can't figure that out from the photos).

It could serve any purpose, but it is surely part of a larger backplane or test jig of sorts with the large connector. The size and type of PCB material hint to me it is late 1960s at the earliest.

[amyk]

Related: https://ingeniumcanada.org/ingenium/collection-research/collection-item.php?id=1972.1357.001

[Ookpik]

Thanks for all the comments, info and link! 

Here is a close-up of the components.

[bob91343]

1N648 zeners I think.

[Fraser]

Looks like a power supply test card that applies a load to the power rail and a test point in the power supply (monitoring point) is extended out to the top of the card. The zener diodes may be a voltage limiter and the capacitor, noise reduction on the test points.

The card is likely inserted into a backplane of a PCB card type rack as part of the test or alignment process.

[Cyberdragon]

Looks like a zener regulator board.  Input to the power resistor, output on the 3 zeners in series and a bypass capacitor.

Indeed. The color coding should match the Zener's part number: 1N845? (grey-yellow-green? I can't figure that out from the photos).

It could serve any purpose, but it is surely part of a larger backplane or test jig of sorts with the large connector. The size and type of PCB material hint to me it is late 1960s at the earliest.

Mid 60s they had those boards like that. This device is from 66 as evidenced by the cap date code.

[Gyro]

I agree, it looks like a PSU monitoring / test board.

Looking a bit closer at the PCB, it appears to be loading one supply rail whilst providing test points for another. The Black socket is presumably a common negative reference for both rails.

[amyk]

Search Internet for "96214 TI" and you will find some more interesting stuff that could be related. "96214-{6 digits}-{1 digit}" seems to be their part numbering scheme. But this is the first 96214-627612-1 that Google knows about.