frequency problem [ HELP ]


hi everyone,

i making project heat heater using thyristor, working fine, problem frequency.

when give frequency of 1 hz in pulse r3(2) curve perfect, when change frequency 50 hz, curve become disturbed, , unfortunately want use frequency of 50 hz.

im attaching circuit.

the code :

code: [select]
float value = 1;

void setup() {
  
  serial.begin(9600);
  
  pinmode(13, output);
}


void loop() {
  
  int sensorvalue = analogread(a0);
  
  float voltage = sensorvalue * (5.0 / 1023.0);
  
  serial.println(voltage);

 
  if (voltage > value) {

delay(200);

digitalwrite(13, high);

serial.println("up"); } else {

digitalwrite(13, low);

}

  
}



thanks alot

please post code.


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