ATMega 128 IO Power Control Solid State Switch

ATMega 128 I/O Power Control ( Solid State Switch, Relay) Kyung. Hee Univ. 2 -0

Computer-Controlled Current Switches BJT Transistors v 전류 제어 Switch(BJT) l NPN Transistor Model l PNP Transistor Model Kyung. Hee Univ. 2 -1

여러 가지 Relay 예 Kyung. Hee Univ. 2 -2

8. 5. 1 Introduction to Relays v 제어 회로와 다른 전원으로 구동하는 Relay의 예 Kyung. Hee Univ. 2 -3

여러 가지 제어소자의 사진 EM, Solid-state, Reed Relay Kyung. Hee Univ. 2 -4

Electromagnetic Relays 의 구조 Kyung. Hee Univ. 2 -5

Electromagnetic Relays Basics v 여러 가지 Relay의 구조 예 v Relay의 구조에 따른 Activation Sequence Kyung. Hee Univ. 2 -6

Reed Relay의 구조 Kyung. Hee Univ. 2 -7

Solenoid Relay의 구조 Kyung. Hee Univ. 2 -8

Solenoid Relay 사진 Kyung. Hee Univ. 2 -9

Interfacing EM Relays, Solenoids, and DC Motors v Current Sink 구조 예 Snubber diode Kyung. Hee Univ. 2 -10

EM Relays와 Solenoids의 Interfacing 예 Kyung. Hee Univ. 2 -11

단 방향 DC Motors Control 회로(High Current MOSFET) 예 Kyung. Hee Univ. 2 -12

Isolated 단 방향 DC Motors Control 회로 예 Kyung. Hee Univ. 2 -13

Isolated 단 방향 DC Motors Control 회로(High Current MOSFET) 예 Kyung. Hee Univ. 2 -14

Isolated 단 방향 DC Motors Control 회로(High Current MOSFET) 예 Kyung. Hee Univ. 2 -15

양 방향 H-Bridge DC Motors Control 회로 예 Kyung. Hee Univ. 2 -16

Isolated 양 방향 H-Bridge DC Motors Control 회로 예 Kyung. Hee Univ. 2 -17

Dual Full-Bridge Driver L 298 l High voltage : 46 V l high current : 4 A l Dual full-bridge driver l Accept standard TTL logic levels l Drive inductive loads such as • Relays, Solenoids, DC and, Stepping motors Kyung. Hee Univ. 2 -18

L 289 Block Diagram M Kyung. Hee Univ. M 2 -19

L 298을 이용한 DC Motor and Stepper Controller L 298 N Current Sensing A Out Vs 1 2 2 3 4 1 470 u. F 35 V Motor Supply Voltage In 1 5 Logic Supply Enable A 6 In GND Vs In 2 3 7 8 9 10 Current Enable B 11 In 4 12 2 7414 1 + - Out 13 14 +Vout 2 Motor 2 -Vout 2 4 2 W 06 Vs Supply Voltage GND 2 1 + 4 2 W 06 Vs 3 104 1 2 3 4 5 6 GND Dir 1 En 1 Dir 2 En 2 Vcc In Put Control Signal Connector Kyung. Hee Univ. 15 4 7414 3 2 +Vout 1 Motor 1 -Vout 1 B 3 1 + Vs Supply Voltage GND

Solid-State Relay(Triac) Kyung. Hee Univ. 2 -21

Stepper Motors Kyung. Hee Univ. 2 -22

Stepper Motors Interfacing 예 Kyung. Hee Univ. 2 -23

Stepper motor control sequence 예 PORTB Output A A’ B B’ 10 Activate Deactivate 9 Activate Deactivate 5 Deactivate Activate 6 Deactivate Activate Deactivate Kyung. Hee Univ. Activate 2 -24

Double Circular Linked List를 이용한 Stepper Motors 제어 Data Structure Kyung. Hee Univ. 2 -25

L 293 Driver를 이용한 Stepper Motor Interface 예 Kyung. Hee Univ. 2 -26