Help with a circuit

B

bs63366

New Member

• Apr 30, 2009

• #1

I am looking to make a circuit that gives power to one wire when it receives power from 2 wires. It cannot give power if there is only power from one of the two wires. The system will be run off of 12 volt and does not need to work with a high amperage. If you need anymore information just ask and i will do my best to answer any questions.

Kyle

 

ronsimpson

Well-Known Member

Most Helpful Member

• Apr 30, 2009

• #2

two 12 volt relays.
Power 1 drives relay1 coil
Power 2 drives relay2 coil
Connect from 12 volts to relay1 contact (normally open) then in series to relay2 contacts (normally open) then to output.
The contacts in series will only conduct when both relays are driven.

 

B

bs63366

New Member

• Apr 30, 2009

• #3

Wow, I should have thought of that lol. Thank you for the quick reponse.

Kyle

 

rmn_tech

Member

• Apr 30, 2009

• #4

1 Relay, Plus CMOS AND gate.

Or Diode logic AND gate

 

B

bs63366

New Member

• Apr 30, 2009

• #5

RMN Tech, can you post a schematic of what you are talking about?

 

ronsimpson

Well-Known Member

Most Helpful Member

• Apr 30, 2009

• #6

One relay. Two supplies 12A and 12B.
+12a supply only drives the coil of the relay.
+12b supply passes through the coil's normally open contacts to putput.

 

rmn_tech

Member

• Apr 30, 2009

• #7

CMOS AND gate.

 

Attachments

• Simple and.jpg

  26.6 KB · Views: 114

Mike_2545

Super Moderator

• Apr 30, 2009

• #8

Depending on how much "power" you want to give, the logic gate might not work in your situation.