Basic Electronics www assignmentpoint com ELECTRONICS An electronics

Basic Electronics www. assignmentpoint. com

ELECTRONICS An electronics system has 3 parts – input , process , output www. assignmentpoint. com

ELECTRONICS Input Devices Mic-sound to electrical www. assignmentpoint. com

ELECTRONICS L. D. R. -Light to electrical Thermistor-heat to electrical www. assignmentpoint. com

ELECTRONICS Thermocouple-heat to electrical Switch Solar Cell-light to electrical www. assignmentpoint. com

ELECTRONICS Output Devices Loudspeaker-electrical to sound L. E. D. -electrical to light Bulb-electrical to light Buzzer electrical to sound www. assignmentpoint. com

ELECTRONICS Relay-electrical to movement L. E. D. has to be protected by adding in a series resistor to take some of the supply voltage www. assignmentpoint. com

ELECTRONICS numbers in a 7 segment display can be produced by using 7 L. E. D. `s www. assignmentpoint. com

ELECTRONICS There are 3 process devices, The NOT gate The AND gate The OR gate www. assignmentpoint. com

ELECTRONICS n Frost Alarm www. assignmentpoint. com

ELECTRONICS When thermistor temp is high the resistance is low and the transistor is off. www. assignmentpoint. com

ELECTRONICS n Frost Alarm www. assignmentpoint. com

ELECTRONICS When thermistor temp is low , the resistance is high and the transistor switches on. www. assignmentpoint. com

ELECTRONICS n Fire Alarm www. assignmentpoint. com

ELECTRONICS When the temp is hot thermistor resistance is low so it takes little voltage and so the resistor takes most of the voltage and so the transistor switches on. www. assignmentpoint. com