Solenoids control using microcontroller?

hgmjr

Joined Jan 28, 2005
9,027
A solid state relay has an operational lifetime on the order of millions of cycles while a standard mechanical relay has an operational lifetime on the order of thousands or tens of thousands of cycles.

It all depends on your application whether you need to consider a solid-sate relay or not.

hgmjr
 

hgmjr

Joined Jan 28, 2005
9,027
In the end, only you can weigh the requirements of your design and decide for yourself which technology is best suited to your application.

hgmjr
 

hgmjr

Joined Jan 28, 2005
9,027
At least now you are armed with the knowledge that if your relay becomes intermittent after a period of heavy use you will know why.

hgmjr
 

Thread Starter

cheesemunger

Joined Jan 25, 2009
53
1: Can I use a TIP120 intead of a TIP102? I think I can but just to make sure?
2: Can I use a 1N4001 or 1N4002 or a group of them instead of a 1N4007? I DON'T think I can but????
 

mik3

Joined Feb 4, 2008
4,843
Since your application does not require high switching frequencies choose the name of the transistor you like :p
 

Thread Starter

cheesemunger

Joined Jan 25, 2009
53
I just got all my parts and it works :) just 1 prob. I and using a 17 V power supply from an old printer. I have checked and only 12.9 V is going into the solenoid. 12.9V isn't enough to kill a 12v solenoid? If it is, do i need to use a voltage divider?

Edit: its actually more like 13.2V
 
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