Hello again,
I'm trying to build a simple audio amplifier using LM386. I'm trying to understand few things so I came up with few questions. Referring to the circuit diagram below:
1- Why do we use 10Ω and 10kΩ? Why these values in particular?
2- What determines the value of the capacitors? For instance, why 0.1µ and 10µ? Is there a way to know how to select these values (equations?)
3- Would using 3Ω speaker work with the same values?
Also, would adding a preamplifier (Like a single stage BJT transistor amplifier) work to enhance the sound quality by increasing the voltage gain? (More than 200?).
Edit: I attached another circuit with a BJT amplifier.
I apologize if these questions seem very obvious, I'm new to electronics and want to learn the theory behind LM386 amplifier.
Thank you.
I'm trying to build a simple audio amplifier using LM386. I'm trying to understand few things so I came up with few questions. Referring to the circuit diagram below:
1- Why do we use 10Ω and 10kΩ? Why these values in particular?
2- What determines the value of the capacitors? For instance, why 0.1µ and 10µ? Is there a way to know how to select these values (equations?)
3- Would using 3Ω speaker work with the same values?
Also, would adding a preamplifier (Like a single stage BJT transistor amplifier) work to enhance the sound quality by increasing the voltage gain? (More than 200?).
Edit: I attached another circuit with a BJT amplifier.
I apologize if these questions seem very obvious, I'm new to electronics and want to learn the theory behind LM386 amplifier.
Thank you.