Electronics > Projects, Designs, and Technical Stuff

PT2399 is bad

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Jan Audio:
Yes, if i was scoping the output signal it looks a bit like that, only this is scoped at the input, should be clean.

Mechatrommer:

--- Quote from: Jan Audio on June 13, 2019, 02:45:35 pm ---only this is scoped at the input, should be clean.

--- End quote ---
right. input. so it has something with the IC input impedance. do you follow schematics as provided by the datasheet? like in the attached pictures? if yes i dont see how it can affect your input signal if your source impedance is lesser than 2Kohm or so. if you can provide schematics and at which point you are probing, then this should be much clearer. i'm trying to help to make you more clearer here.


--- Quote from: Jan Audio on June 13, 2019, 01:35:32 pm ---Here is a better video :

--- End quote ---
still bad :scared:

JPortici:

--- Quote from: Jan Audio on June 11, 2019, 12:43:58 pm ---( fake chinese )

--- End quote ---


--- Quote from: Jan Audio on June 11, 2019, 01:36:49 pm ---They are fake for sure, i ordered them in china.

--- End quote ---

which is funny because last i checked PT is a chinese company

Jan Audio:
Oh, funny.
Fake or not i dont care, availability i care.
Should i remove the fake notice ?

btw : they can still be fake.

Buriedcode:
Well, lets put the fake thing aside, and say you have built a circuit using this chip and it isn't doing what you expect it to be doing.  This could be either because your expectations are different from what the circuit is supposed to do, or the circuit isn't doing what it is supposed to do.
 
I'm going to add to the requests for a schematic of your setup. A blurry video of a scope means nothing if we don't know exactly what the circuit is, what the input is, and what you hope to achieve.

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