Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

relay driven by microcontroller 89S52

Status
Not open for further replies.

rahul3dreams

New Member
hey guys can ne1 help me?????????
i want to drive a automobile starter relay(12V, 2 ohms, commonly used in 2 wheelers) from 0v 2 its pull in voltage & from 12v to its dropout voltage. using atmel 89S52, pls giv me the solution for this
 
hey guys can ne1 help me?????????
i want to drive a automobile starter relay(12V, 2 ohms, commonly used in 2 wheelers) from 0v 2 its pull in voltage & from 12v to its dropout voltage. using atmel 89S52, pls giv me the solution for this

Try this... standard relay driver circuit for a relay. 2 ohms is a bit low for a relay coil tho', are you sure this is right?
 

Attachments

  • relay_driver.jpg
    relay_driver.jpg
    11.6 KB · Views: 2,335
You didn't read his post accurately - he said 'starter relay' - which is usually called a solenoid, and does take LOT'S of current, so 2 ohms sounds quite plausible.

Ah, yes of course, I answered in haste. I should have realised that.

Well, in case the original poster reads this... the relay circuit I posted would do it, by using a small relay to control the larger (starter solenoid). Although, I am in general against using a relay to control a relay it's still going to be easier and cheaper that way (probably!).
 
Status
Not open for further replies.

Latest threads

New Articles From Microcontroller Tips

Back
Top