4. It is desired to make the isolated activation of a lamp, the signal is sent by a microcontroller (+5V and OV). Proble

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4 It Is Desired To Make The Isolated Activation Of A Lamp The Signal Is Sent By A Microcontroller 5v And Ov Proble 1 (189.52 KiB) Viewed 23 times

4. It is desired to make the isolated activation of a lamp, the signal is sent by a microcontroller (+5V and OV). Problems involving high and low voltage circuits are known to exist and the designer hardware must be careful to include the appropriate protections. To protect the microcontroller, it is good practice to use an optocoupler (PC817) and it activates a relay that will energize or not the light bulb. The output of the optocoupler must also be protected, thus increasing the life of the circuit. From the microcontroller datasheet, it is known that it supplies a maximum of 25 mA current per pin. The relay coil voltage is 5 V and its resistance is 50 1. Add one Led to the circuit so that it indicates when the relay is activated. Data: ILED = 15 mA and VLED = 1.8 V. a) Schematic of the complete circuit. b) Design the components involved using the datasheet of the components involved. SONGLE BA cu TONOMAC A DOS ROADCODE SRO-OSVDC SL-C MICROCHIP PIC18F87J11 GNO UCC