I am doing an arduino project that involves sounds (square waves) generated with the tone() function. I had a 8 ohm 0.5 watt speaker connected to the arduino with a 100 ohm series resistor, but this isnt quite loud enough.
While researching i found this thread on another forum: https://forum.arduino.cc/index.php?topic=164436.0
One user suggested a very simple amplifier circuit using two transistors:
Also note:
"It's simple because it only has to amplify square waves of a fixed amplitude, which is what comes out of an Arduino digital pin or PWM pin. It's no good for amplifying general audio signals, or the outputs from the DACs on the Due."
The two transistors are a BC337 and BC327, an NPN and PNP. I do not have these two transistors, but I do have an A1659A and a C4370A. One is NPN one is PNP. Could i use these instead?
Sorry if this is a dumb question or i have not provided enough information.
While researching i found this thread on another forum: https://forum.arduino.cc/index.php?topic=164436.0
One user suggested a very simple amplifier circuit using two transistors:
Also note:
"It's simple because it only has to amplify square waves of a fixed amplitude, which is what comes out of an Arduino digital pin or PWM pin. It's no good for amplifying general audio signals, or the outputs from the DACs on the Due."
The two transistors are a BC337 and BC327, an NPN and PNP. I do not have these two transistors, but I do have an A1659A and a C4370A. One is NPN one is PNP. Could i use these instead?
Sorry if this is a dumb question or i have not provided enough information.