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Electronics Forum (Circuits, Projects and Microcontrollers)

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We are making an Voice announcement system for a firm to announce token numbers as per bank announcement systems and having an issue in Mp3 module, I've used and mp3 module in which there is a decoder AB25CS330Y 1-74 but now i have ordered some modules but they don't have this same decoder and am having issue with the voice, cuz in this decoder voice is a bit crumbled , lagging ...

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I tried these (LM 317 and 7805) in a simple circuit and got strange results from Icircuit. Current on the output but no current showing on the input!!, Can’t find anything wrong with grounding , etc. Seems like the models are wrong? Anyone have any input?

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Since I am still pretty much the noob on the block in my adventures into the world of AC circuitry, and have assembled a lot of the proper equipment, etc. Still trying to unwind my DC soaked brain regarded the earth ground trap as it relates to bench equipment.

POTENTIAL INCOMING STUPID QUESTION:

Putting your DUT on an isolation transformer solves the i...

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Hi everyone,


I'm trying to understand this circuit (attached image) as part of an experiment I'm running, based on this video:



I understand basic comparator operation and the standard Schmitt trigger configuration (positive feedback creating hysteresis around V+ = V-), but this particular circuit has extra com...

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Hello ,I have a situation as shown below were there are 3 differential lines one is a victim and two agressors.
I have one agressor is far away then the other agressor .
what is the best way to see the crosstalk between the differential ines.
buttom line We have digital data which is getting distorted in the time domain.
Differential mode cross talk is a ...

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