The LM386 is a "Low Voltage Audio Power Amplifier"
2
votes
1answer
127 views
LM386 not passing white noise signal that was generated by a second LM386 (updated)
I am using an LM386 to generate white noise. The circuit also has a second 386 for an on-board audio amplifier. Both chips are powered by the same 9V battery.
The audio amp won't pass the white ...
3
votes
2answers
263 views
LM386 audio amplifier not amplifying
This is my first attempt at making a really simple audio amplifier. The schematics are below:-
First I tried connecting the circuit to a 9V battery. (Multimeter reads around 8.3 Volts, which is in ...
3
votes
1answer
116 views
List of LM Integrated Circuits?
Does anyone have / know of a list of all the LM integrated circuit packages available? The EE stockroom at my university recently reorganized and they cataloged several pages of part numbers without ...
1
vote
0answers
267 views
Electret condenser microphone, LM386 amplification… does size matter?
I've built a motorcycle intercom, of which comprises of two amp units, one for the rider, one for the pillion. Both are powered by a 9v battery each, and the option (using a jumper) to enable boost.
...
1
vote
1answer
230 views
Maximize performance LM386 and 4Ohm speaker
I'm designing a very simple circuit which contains a microcontroller, an LM386 and a speaker.
I've previously asked a question:Help in designing a speaker driven by an LM386
and the answers helped ...
1
vote
2answers
209 views
What potentiometer should I choose?
I want to create a sound amplifier with the LM386 and I need a potentiometer. I don't have a clue what I'm doing (:P) but I've printed out the datasheet (for the LM386) and had a look at it.
So I ...
2
votes
3answers
995 views
How does this LM386 circuit boost bass?
I'm just starting out in Electrical Engineering and was wondering if anyone could clarify a question about the following RC circuit regarding the LM386 op amp.
My question is about the following ...
4
votes
2answers
352 views
LM386 amp circuit lag
I'm building a motorcycle intercom and am using the LM368 IC for my amp. My circuit works well (surprisingly, I'm new to this).
I've got a button which I use as a push to talk switch. This works for ...
3
votes
4answers
3k views
Why is microphone + opAmp + Arduino circuit not working?
I followed the mic + op-Amp part of this schematic exactly using an Lm386 chip:
https://randomskk.net/projects/lightstrip/schematic.pdf
and sent the output from the op-amp into a pin on an Arduino ...
3
votes
5answers
1k views
Is this a suitable sine wave osc? how would I control the frequency?
Overview-
I'm making a bank of analog sine wave oscillators and I'm interested in keeping the design compact.
I've started by making a Wien Bridge oscillator. As I'm working from a single power ...
