OPTOCOUPLER POWER Circuit With MOC3041

An optocoupler is a power electronic circuit, whose purpose is to isolate the pricipal circuit of the power section, the components used are as follows.

The aim of this is to activate optocoupler power load that has to be fed with an alternating current, and we want this asylee of our electronic circuit, as this can be damaged. In J1 have an analog signal to activate the optocoupler U1 (MOC3041), for it has to a current maximum of 15 mA for the LED of optocoupler, so with VJ1, R4 and R5 I get one not exceeding 15mA. bp VJ1 = 12 Volts and R1 = R2 = 1K I = 12mA. and activate the triac U1, it will cause the leg G of triac U2 (TIC226) circulates a current that will activate this and connected to the heater function J2. When U2 fails, R1 and C1 behaves as a high impedance resistor since Sanal of J3 is alternating, and in all respects as if the heater was insulated from power. LED D3 D1 protects its reverse breakdown voltage and D2 D1 requires that for small currents circulate.

Electronic Scheme


components
U1: MOC3041 is an optocoupler.
U2: TIC226, a triac that supports 8A.
R1 = 36 Ohm (1Watt), R2 = 330 Ohm (1/2 Watt), R3 = 330Ohm, R4 = 1K, R5 = 1K.
D1-> Led, D2, D3 -> 1N4007
C1 = 1nF 400V.
J1, signal to activate the optocoupler.
J4 jumper to E5GN LED lights.
J3, J3 is placed on AC 220 V - 50 Hz
J5 jumper for the D1 LED lights, indicating that the load is being fed in J2.
J2, feed load (Example: a heater, a light bulb, ... etc).
Layout

Circuit