Author Topic: Schematic understanding... how do I interpret this?  (Read 571 times)

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Offline JupitusTopic starter

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Schematic understanding... how do I interpret this?
« on: January 23, 2024, 04:34:10 pm »
Hey all! May be a daft question, but can someone please explain to me how to interpret this on a schematic ?
 

Offline TimNJ

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Re: Schematic understanding... how do I interpret this?
« Reply #1 on: January 23, 2024, 04:44:04 pm »
I'd guess it indicates a PCB "solder bridgeable" jumper.

Something like the bottom four "parts" in the attached photo. Drag solder between the two pads to solder them together.
 

Offline BlownUpCapacitor

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Re: Schematic understanding... how do I interpret this?
« Reply #2 on: January 23, 2024, 07:39:37 pm »
My best guess other than what TimNJ said is an SMD fuse, as it looks like that components might have a current rating. 175mA fuse?
Hehe, spooked my friends with an exploding electrolytic capacitor the other day 😁.
 

Offline pcprogrammer

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Re: Schematic understanding... how do I interpret this?
« Reply #3 on: January 23, 2024, 07:52:17 pm »
The text above the symbol says it is a jumper with dimensions 43*39. The current being mentioned looks like a hint for others that it typically is 175mA.

I find the solder-able jumper explanation far more likely then it being a fuse symbol.

Edit: even the part reference PJP10 more likely points to a jumper than a fuse.
« Last Edit: January 23, 2024, 07:55:00 pm by pcprogrammer »
 

Offline BrokenYugo

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Re: Schematic understanding... how do I interpret this?
« Reply #4 on: January 23, 2024, 08:14:17 pm »
I've seen something like this in a Chinese transistor radio kit, each stage of the circuit had a solder bridge on the Vcc trace and the expected current given. I think the idea was you were supposed to build it stage by stage and test to sort of confirm you built it right.
 


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