Computer-Controlled Current Switches BJT Transistors

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Presentation transcript:

ATMega128 I/O Power Control ( Solid State Switch, Relay) KyungHee Univ.

Computer-Controlled Current Switches BJT Transistors 전류 제어 Switch(BJT) NPN Transistor Model PNP Transistor Model KyungHee Univ.

여러 가지 Relay 예 KyungHee Univ.

8.5.1 Introduction to Relays KyungHee Univ.

여러 가지 제어소자의 사진 EM, Solid-state, Reed Relay KyungHee Univ.

Electromagnetic Relays 의 구조 KyungHee Univ.

Electromagnetic Relays Basics Relay의 구조에 따른 Activation Sequence KyungHee Univ.

Reed Relay의 구조 KyungHee Univ.

Solenoid Relay의 구조 KyungHee Univ.

Solenoid Relay 사진 KyungHee Univ.

Interfacing EM Relays, Solenoids, and DC Motors Current Sink 구조 예 Snubber diode KyungHee Univ.

EM Relays와 Solenoids의 Interfacing 예 KyungHee Univ.

단 방향 DC Motors Control 회로(High Current MOSFET) 예 KyungHee Univ.

Isolated 단 방향 DC Motors Control 회로 예 KyungHee Univ.

Isolated 단 방향 DC Motors Control 회로(High Current MOSFET) 예 KyungHee Univ.

Isolated 단 방향 DC Motors Control 회로(High Current MOSFET) 예 KyungHee Univ.

양 방향 H-Bridge DC Motors Control 회로 예 KyungHee Univ.

Isolated 양 방향 H-Bridge DC Motors Control 회로 예 KyungHee Univ.

Dual Full-Bridge Driver L298 High voltage : 46V high current : 4A Dual full-bridge driver Accept standard TTL logic levels Drive inductive loads such as Relays, Solenoids, DC and, Stepping motors KyungHee Univ.

L289 Block Diagram M M KyungHee Univ.

L298을 이용한 DC Motor and Stepper Controller L298N Current Motor Supply Logic Current Sensing Voltage Enable Supply Enable Sensing A Out Out Vs In A In GND Vs In B In Out Out B 1 2 1 2 3 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 GND Dir1 En1 Dir2 En2 Vcc In Put Control Signal Connector +Vout 1 Motor 1 -Vout1 +Vout 2 Motor 2 -Vout2 Vs Supply Voltage GND + - 470uF 35V 104 1 2 4 3 2W06 2 7414 1 4 7414 3 Vs Supply Voltage GND KyungHee Univ.

Solid-State Relay(Triac) KyungHee Univ.

Stepper Motors KyungHee Univ.

Stepper Motors Interfacing 예 KyungHee Univ.

Stepper motor control sequence 예 PORTB Output A A’ B B’ 10 Activate Deactivate 9 5 6 KyungHee Univ.

Double Circular Linked List를 이용한 Stepper Motors 제어 Data Structure KyungHee Univ.

L293 Driver를 이용한 Stepper Motor Interface 예 KyungHee Univ.