Hello
I am trying to make an audio amplifier. I am using an LM386 audio amplifier. I want to pick up a sound using a small microphone (link below) and hear the sound through a set of head phones. I found the circuit below online:
for the output, i hooked up a trs connector (for stereo output). the ring and tip leads are connected to pin three, and the sleeve is grounded.
fo the 250uF cap, i used a 250uF ELECTROLYTIC capacitor, is this okay?
my problem:
i hooked up the microphone to the left side of the schematic (the ground going to the dot on the left, then i have the microphone hooked to power).
the potentiometer is also hooked up, the middle pin is grounded, then one side goes to pin 3 and the other side to the negative side of the microphone.
what happens is i just hear a noise. excuse the explination but it makes a 'farting' sound and when i turn the pot, the sound either gets higher or lower. i play a song on a speaker nearby and i cannot hear it. is there anything i should check first? i breadboarded everything and its still not working. heres a pic of the breadboard i made:
the microphone i used:
question about the mic: both cables in the black heatshrink have to be grounded right?
thanks
I am trying to make an audio amplifier. I am using an LM386 audio amplifier. I want to pick up a sound using a small microphone (link below) and hear the sound through a set of head phones. I found the circuit below online:
for the output, i hooked up a trs connector (for stereo output). the ring and tip leads are connected to pin three, and the sleeve is grounded.
fo the 250uF cap, i used a 250uF ELECTROLYTIC capacitor, is this okay?
my problem:
i hooked up the microphone to the left side of the schematic (the ground going to the dot on the left, then i have the microphone hooked to power).
the potentiometer is also hooked up, the middle pin is grounded, then one side goes to pin 3 and the other side to the negative side of the microphone.
what happens is i just hear a noise. excuse the explination but it makes a 'farting' sound and when i turn the pot, the sound either gets higher or lower. i play a song on a speaker nearby and i cannot hear it. is there anything i should check first? i breadboarded everything and its still not working. heres a pic of the breadboard i made:
the microphone i used:
question about the mic: both cables in the black heatshrink have to be grounded right?
thanks