MOC 3021 Circuit Working Principle

MOC 3021 Circuit

The MOC302X (MOC3020,MOC3021,MOC3022 are same) series are mainly coupled as a isolators consist of a infrared LED with light activated SCR.

DRIVE CAPACITY:

1. Off state output voltage = 400V.
2. RMS Forward current = 100mA.
3. Forward Peak current =1A.
4. Max power =200W.
5. Easy interface with ac 230v.

PIN DETAILS:

1. Anode.
2. Cathode.
3. NC (No Connection)
4. MT1 (Main Terminal)
5. NC (No connection)
6. MT2 (Main Terminal)

CIRCUIT DIGRAM:

WORKING:

The MOC3021 was designed for interfacing between electronic controls and high power TRIAC to control loads for (AC Votage) operations.
A small pulse (Clock pulse with 5 V range) is applied to its input that is pin 1 and pin 2.
The light produced by this LED activates the TRIAC and that time power is switched ON.
Mainly it is used to maintain isolation between low power circuit to high power circuits (that is a 5v pulse controls 3 phase load volts).

ALL SENSOR DETAILS:
1. HC-05 – Bluetooth
2. Mpu 6050 accelerometer-gyroscope- -module
3. Flame-sensor
4. Rotary-encoder
5. Force-sensor-fsr400
6. Current-sensor-acs712
7. Flex-sensor
8. IR-sensor-tcrt5000
9. Pulse-sensor-pin
10. Color-sensor-tcs230
11. SD-card-module
12. Oled-with-arduino
13. Addressable-rgb-led-strip-ws1812
14. Relay-module
15. TFT-1-8-display-st7735r
16. 8×8-dot-matrix-display-max7219
17. Smoke-sensor-mq-2
18. Ultrasonic-sensor-HC-sr04
19. PIR-motion-sensor-hc-sr501
20. Tilt-sensor-sw-520d
21. Microphone-sound-sensor
22. Reed-switch-reed-sensor
23. Rfid-reader-Em18
24. Rfid-tag
25. RTC-real-time-clock-ds1307
26. Temperature-sensor-ds18b20
27. Moisture-sensor
28. Rain-sensor
29. Pressure-sensor
30. Accelerometer
31. MOC-3021-circuit
32. DHT11-DHT22-temperature-and-humidity-sensor
APPLICATION:
1. As Triac driver.
2. Motor drive.
3. Consumer appliances.
4. Like solid state relay.
5. 230V solenoid valve operation.
6. Lamp dimmer.
VIDEO TUTORIAL: