Symmetric Power Supply Controlled by Arduino PWM

A symmetric power source for audio amplifiers controlled by the Arduino's PWM with max output +-30v 10A.

Aug 24, 2017

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audio

power supply

Components and supplies

Arduino UNO

Project description

Code

code to your arduino

arduino

code to your arduino

1int duty;
2int signale;
3void setup() {
4
5  Serial.begin(9600);
6  pinMode(5, OUTPUT);
7  pinMode(9, OUTPUT);
8  analogWrite(5, 0);
9  analogWrite(9,  0);
10}
11
12
13void loop() {
14 while (!Serial) {} 
15    signale = Serial.parseInt();
16    if (signale == 5){
17      duty = Serial.parseInt();
18      analogWrite(signale,  duty);
19    }
20    if (signale == 9){
21      duty = Serial.parseInt();
22      analogWrite(signale, duty);
23    }
24}

int duty;
int signale;
void setup() {

  Serial.begin(9600);
  pinMode(5, OUTPUT);
  pinMode(9, OUTPUT);
  analogWrite(5, 0);
  analogWrite(9,  0);
}


void loop() {
 while (!Serial) {} 
    signale = Serial.parseInt();
    if (signale == 5){
      duty = Serial.parseInt();
      analogWrite(signale,  duty);
    }
    if (signale == 9){
      duty = Serial.parseInt();
      analogWrite(signale, duty);
    }
}

code to your arduino

arduino

code to your arduino

1int duty;
2int signale;
3void setup() {
4
5  Serial.begin(9600);
6
7  pinMode(5, OUTPUT);
8  pinMode(9, OUTPUT);
9  analogWrite(5, 0);
10  analogWrite(9,
11  0);
12}
13
14
15void loop() {
16 while (!Serial) {} 
17    signale = Serial.parseInt();
18
19    if (signale == 5){
20      duty = Serial.parseInt();
21      analogWrite(signale,
22  duty);
23    }
24    if (signale == 9){
25      duty = Serial.parseInt();
26
27      analogWrite(signale, duty);
28    }
29}

int duty;
int signale;
void setup() {

  Serial.begin(9600);

  pinMode(5, OUTPUT);
  pinMode(9, OUTPUT);
  analogWrite(5, 0);
  analogWrite(9,
  0);
}


void loop() {
 while (!Serial) {} 
    signale = Serial.parseInt();

    if (signale == 5){
      duty = Serial.parseInt();
      analogWrite(signale,
  duty);
    }
    if (signale == 9){
      duty = Serial.parseInt();

      analogWrite(signale, duty);
    }
}

Downloadable files

Multisim file

schema

Multisim file

Low pass filters

Documentation

use this interface to control the pwm's from arduino ( pins 5 and 9 )

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