Discuss Relay related question in the Electrical Forum area at ElectriciansForums.net

Welcome to ElectriciansForums.net - The American Electrical Advice Forum
Head straight to the main forums to chat by click here:   American Electrical Advice Forum

Reaction score
0
Hello,

I'm trying to build a 12v circuit where a npn laser sensor activate a pump but I have no idea on how to build it. Its pretty simple but if I hook the laser to the circuit it looks like there's not enough current passing through to power the pump. So I think I would need a relay right? I'm a total noob when it comes to electrical issues :(


Thank you in advance!
 

Attachments

  • Relay related question IMG_20200801_145238 - EletriciansForums.net
    IMG_20200801_145238.jpg
    47.8 KB · Views: 12
  • Relay related question Screenshot_20200801_133509 - EletriciansForums.net
    Screenshot_20200801_133509.jpg
    73 KB · Views: 11
Yes, it looks like the sensor switching capability is probably well under the pump's requirements, so you will probably need a relay. How much current does the pump draw?
 
Hello!

I have to check but it's a car water pump so I would assume it's a 12v pump.

It will be 12V, but you will need a relay because of the current it takes. I would hazard a guess at least a couple of amps. More than the sensor can safely switch anyway.
 

Reply to Relay related question in the Electrical Forum area at ElectriciansForums.net

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

Electrical Forum

Welcome to the Electrical Forum at ElectriciansForums.net. The friendliest electrical forum online. General electrical questions and answers can be found in the electrical forum.
This website was designed, optimised and is hosted by Untold Media. Operating under the name Untold Media since 2001.
Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock