- Please Explain The Design Of The Circuit Below And How It Functions The Summary Below Is What I Wrote I Need To If Thes 1 (116.87 KiB) Viewed 22 times
The above circuit diagram makes use of a zero cross detector circuit which produces an output to the 555 timer. This circuit comprises of operational amplifiers, resistors, and capacitors. It works by producing an output pulse by finding a point supplied by the AC signal which has a zero voltage and can be used as a comparator.
The timer then generates an output PWM wave which is used as the input to the MOC8101_BASSO. The timer is operating in the monostable function. The PWM wave allows for the speed control of the motor. This is achieved by controlling the circuit’s current by varying the time of each flow at every component.
A phase triggering circuit uses the triac to control and apply a chopped AC waveform to the induction motor. The triac is a bi-directional device. The resistor in series controls the voltage supply to the motor. The voltage is triggering for each cycle once the capacitor charges and discharges, thus allowing the gate of the triac activate. The process discontinues when the half-cycle ends only to repeat itself. This allows for the positive and negative pulses in a sinusoidal waveform. It changes the control of AC supply.
V1 230 Vpk 50 Hz 0° D1 1N4005G D4 1N4005G D2 IN4005G 1N4005G R1 m 22KQ 01A MCT6 VCC 5V R2 -10k0 R3 5.36KO C1 1uF U2 NOT VCC ATE DIE C2 20.01uF 5V as A1 R4 10k 555 VIRTUAL VCC SV 03 MOC8101 BASSO R5 3300) RG www 36002 Induction Motor 12V 25W LRY {390 C3 0.01μF V2 230 Vpk 50 Hz 0⁰