Can I use LM386 instead of LM358?
They’re not interchangeable. LM386 is an audio amp, intended to drive a speaker. It’s not any kind of opamp like the LM358 is. Never use the LM358 for audio.
How does the LM386 work?
LM386 is a 8 pin Power amplifier IC suited for low power applications. It has a wide supply range from 4v to 12v and capable of providing voltage gain from 20 to 200. The output gain is internally set to 20 to reduce the usage of external parts and can be modified using two pins of the IC.
How many watts is LM386?
The IC consists of an 8-pin dual in-line package (DIP-8) and can output 0.25 to 1 watts of power, depending on the model, using a 9-volt power supply.
How do you calculate LM386 gain?
Without any external components, it has a gain of Gv = 2x15K/(150+1350) = 20 (26 dB). With a capacitor (or shortcutting) between pins 1 and 8 , it has a gain of Gv = 2x15K/150 =200 (46dB).
What is inside LM386?
The Audio amplifier can be built with LM386 IC, capacitors like 100 µF, 1000 µF, 0.05 µF, 10 µF, Potentiometer – 10 KΩ, resistor-10 KΩ, power supply-12V, speaker-4Ω, breadboard, and connecting wires. Basically, this Audio Amplifier includes 3-functional blocks such as Power as well as Output, Bypass, gain control.
What is the gain of LM386?
The LM386 is a power amplifier designed for use in low volt- age consumer applications. The gain is internally set to 20 to keep external part count low, but the addition of an external resistor and capacitor between pins 1 and 8 will increase the gain to any value up to 200.
What is audio amplifier circuit?
Audio amplifier is the basic circuit configuration that is required to amplify, the audio signal received through a device like a microphone or the audio signal that is to be transmitted out through a speaker/ Radio device/Wireless transmitter etc.
Which class is best for subwoofer?
The very best amplifier for a subwoofer is a class AB or Class H amplifier. Class D amplifiers are too slow and cannot keep up with repetitive bass. A class AB has a toroidal transformer and coke can capacitors so when the kick drum kicks the woofer responds instantly.