Hack The Spy Ear and Learn to Reverse Engineer a Circuit

Step 4 Picachu's Spy Ear

Picachu bought spy ears that are different than the one I used. It turn out they are missing two capacitors that makes it amplify less.

Comments

[techh2]

why this circuit dosent work please send me explication for this circuit plz plz i ned this circuit

[yuvensius Edulgensiano]

so, which one the true..? i dont understand about these.

[Biotele]

the first model. This is to show that there are variation.

[namzer0]

there's something fishy about the schematics and the PCB Picture. They Don't Match!!! Please fix. I can't find where the 47uF capacitor is. in the schematic

[freerunnin1]

hi, do you think you could send me a picture of where the mic is linked to? cos mine came off and i dont know where to solder them. thanx

[Biotele]

The microphone goes where the green dots are on the reverse side picture in step 4.

[Picachu]

Yep, chinese versions I guess... Just to make this accurate, like you said, those 2 ceramic capacitors are in fact 100nF, not 100uF as I labeled them.