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What does this symbol represent?

mystery symbol

It was found on the circuit diagram for a TDS973A a board for which this was the only information I was able to find online schematic containing symbol

schematics symbol
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2 Answers 2

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These are "solder links" and could look like:

enter image description here

Note how the top right one looks the most similar to the symbol from the schematic.

These are copper shapes on a PCB.

If you don't do anything these structures will be an "open" so they make no connection.

But using a soldering iron and some solder it is easy to apply some solder and make that connection.

This can be used to connect / disconnect certain parts of a circuit on a PCB and so set certain options, for example to feed a certain voltage to a line (or not).

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  • \\$\\begingroup\\$ Note, symbols with arrows instead of shapes are not solder-bridge points, but a purpose-built gap to allow arcing under certain controlled circumstances. Solder-bridge points are not designed for that. \\$\\endgroup\\$ – rdtsc 7 hours ago
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Those are solder-bridge points and the circuit symbol accurately represents the shape of the PCB pads.

enter image description here

Figure 1. Options J1, J2 and J4 have been bridged. Option J3 has been left open. Source: PCB Libraries.

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