Over current protection

Need help with a project? Trying to find a component? Post any general technical questions here.
Post Reply
gfdertyh543
Posts: 1
Joined: Wed Mar 20, 2019 11:36 am
Contact:

Over current protection

Post by gfdertyh543 » Wed Mar 20, 2019 11:38 am

How to provide Over current protection in a power supply?

tocnaza
Posts: 1
Joined: Fri Mar 22, 2019 8:51 am
Contact:

Re: Over current protection

Post by tocnaza » Fri Mar 22, 2019 8:57 am

Hello!

you can connect a transistor base emmiter junction across series resistor. When the voltage across the series resistor reaches 0.7 volts the relay connected to collector will operate. If this 0.7 volt drop isnot permissable then this circuit canbe used.

Best regards,
free porn
Last edited by tocnaza on Sat Mar 23, 2019 9:01 am, edited 1 time in total.

David
Posts: 191
Joined: Sun Oct 04, 2015 6:18 pm

Re: Over current protection

Post by David » Fri Mar 22, 2019 11:32 am

Is this to be an add-on to a proprietary power supply, or one you have built? Do you have circuit diagrams? What are the output voltages, and the limiting current you wish to achieve?

This is not normally a difficult matter to implement, but more details please!

Post Reply