Home Forums Job & Work Life 전자부품에 대한 질문- 옵토 커플러와 릴레이 전자부품에 대한 질문- 옵토 커플러와 릴레이 Name * Password * Email I am not an expert, but have been involved in this sort of things for over 30 years, so here we go. >내가 알기로 솔리드 스테이트 릴레이는 솔레노이드 코일대신 옵토 커플러를 이용한 방식으로 알고 있는데요, No, not really. Solid state relays are traditionally made of thyristors (I.e. SCRs and Triacs). Optocouplers can be used to drive relays (SS or mechanical) with a small current at a lower voltage. The product you linked can be driven directly by logic (e.g. CMOS-level) outputs without having to add a separate driving circuit. The relay on that board requires 30mA@12VDC. An i/o pin of your microcontroller or processor cannot possibly deliver this. Traditionally you would add a driving circuit using a TR or FET (E.g. 2N7000). I agree to the terms of service Comment
