Question Can anyone give me some information about this hardware?

Sep 9, 2023
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I'm not tech savvy but I'd really like to find out what this is or what its worth.

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Need more high-res photos of connectors, markings on capacitors etc. Does the gray/black colored squares have any markings at the sides (look like some kind of relays).

And also - from where did you get this? You have the original box it was contained within or a description of such?

And if it came from a business, what kind of ?
 
Looks like an audio receiver
Um, no it doesn't.

It looks like some industrial equipment. It can be a piece of equipment that is intended to fit to some other rare equipment (not able to get that sound properly in English but hope you understand).
  • Cannot se any normal audio interface.
  • White onboard connectors, little below middle doesn't seem to be of a standard on-shelf type.
  • In top part of the image it seems to be 9-pin D-sub connector, possible RS232 (for monitoring ?)
  • In the bottom part, the gray components may be a series of relays.
  • No part of the PCB seems to handle radio signals (use to be hidden behind a thin metal sheet box) nor is there any plugs/connector for antennas.
  • There is a yellow and pink wire that passing through three current transformers.
From the overall design (gut feeling), I'd say it's probably manufactured between '90 - '00.

Maybe it is an old rectifier/inverter/charger for a battery bank. However, there is this lack of visible terminals for high current wires so it's just a vague guess.

As stated earlier, Any hint from OP would be better than this - If we just knew what kind of company this equipment came from, it can be narrowed down. Also more photos revealing all outputs and terminal labels will help. The photos in first post are just not sufficient in order to identify the item.
 
What possessed somebody to "ty-rap" the electrolytic filter caps together?

I'd say the Ty-Raps might be added to reduce side-to-side movement due to vibration during transport.

If you've ever watched a printed circuit board with unsupported components, whilst the unit's bolted to a high power vibration table in an environmental test lab and illuminated with a synchronised strobe, you'll have seen tall capacitors "waving in the breeze".

I had to totally redesign a commercial PCB because all the capacitors and power transistors vibrated loose and broke off, when subjected to prolonged operation inside a vehicle installation.

Personally, I would have clamped those electrolytics properly if I had any concerns about vibration.
 
What possessed somebody to "ty-rap" the electrolytic filter caps together?
Good question. Probably cheaper to design. It's quite common to connect larger components (i.e. capacitors, transformers, etc) by wire instead of being mounted onto the pcb itself. However, capacitors of the size seen in the pictures are in generally not large/heavy enough to be connected by wire.