The lm380n audio amp.
Lm380 audio amplifier circuit.
A unique input stage allows ground referenced input signals.
The input stage in the above circuit is an emitter follower and it is composed of pnp transistors like q1 and q2.
This paper describes the circuit operation of the lm380 its power handling capability methods of volume and tone con trol distortion and various application circuits such as a bridge amplifier a power supply splitter and a high input impedance audio amplifier.
Mini audio amplifier circuit.
This is a simple audio amplifier using lm380 ic.
The working of the circuit is very straight forward as all the work is done by the lm386 ic itself.
But this sound is so clear and melody.
I was a little intimidated by this ic the first time i looked at the datasheet because of all the ground connections.
Most of the component values in this circuit aren t critical.
Normally we use 12 voltage for this amplifier circuit diagram.
The c6 can choose get many the value since 47uf to at 470uf which have a voice good bass.
This is mini size power amplifier 2 watt otl that use ic lm380.
If you need only vocal then you can use this circuit diagram.
Emitter follower pnp emitter follower.
Now that you ve seen the bare minimum of what it takes to make an audio amplifier with the lm386 lets build a higher fidelity version with an adjustable gain control.
The circuit shown in figure 1 is a very simple audio power amplifier.
The output is short circuit proof with internal thermal limiting.
A simple but efficient audio amplifier is designed using lm386 audio amplifier ic.
10v 22v the lm380 is a power audio amplifier for consumer.
In order to hold system cost to a minimum gain is internally fixed at 34 db.
The simplicity of this circuit is made possible by the lm380 s minimal requirements for external components since it is already internally equipped with the necessary biasing compensation and gain circuits.
The lm380 is a power audio amplifier for consumer applica tions.
In the car also can use this circuit diagram.
It s run 9 voltage to 15 voltage.
Lm380 1features description wide supply voltage range.
We get only 5 watts from this circuit diagram.
But after prototyping with this audio amp i don t think i ll ever go back to the lm386.
When the system is powered on and proper audio input is given at the input the lm386 amplifier the input signal by a factor of 200 and drives the output speaker.
Circuit description figure 1shows a simplified circuit schematic of the lm380.
Mini amplifier circuit diagram using lm380.
A great sounding lm386 audio amplifier.
Which use outside equipment adds least.
The output automatically self centers to one half the supply voltage.
The circuit can be connected in four stages which include the following.
