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Topic: Mosfet to switch off audio amplifier (Read 109 times) previous topic - next topic

snyfir

Hello every body,

To preserve noise and consumsion when the audio amplifier TD2030A is not used i have try to use a IRLML2502 mosfet.
I connected the two thinks together like the attach file.
but when i try it the arduio crash and when i connect the gate to the ground the audio amplifier is still working. Did i do something wrong ?

Thank for your help



PaulRB

#1
May 19, 2019, 01:53 pm Last Edit: May 19, 2019, 02:00 pm by PaulRB

That schematic looks ok but it is not complete. No Arduino is shown and we cannot tell which pins of the amplifier are connected. Please post a more complete schematic. Hand-drawn is fine. Also post pictures of the circuit that are well lit and well focused, so we can see where each wire is connected.

Paul__B

Low side switching.

This is going to end in tears!  :smiley-eek:

PaulRB


jremington


Paul__B

Paul, please explain.
Remember "phantom powering"?  This device is an audio amplifier.

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