It's not clear what you want. A DC-power supply has a plus pole and a minus pole. You certainly mean a component with an open collector output that is somehow triggered/switched on, right?by the open collector signal from a power supply.
SGT. I was being facetious, kinda mead I guess. He wanted a relay circuit so I gave him one. Since there was almost no supporting information as to specific requirements I just googled and posted a "relay circuit!"5v/500 Ohms means that the LM339 would have to sink 10mA; where it may only be able to sink 6mA. It might work, but I wouldn't guarantee it.
An LM311 would be a better choice.
|Thread starter||Similar threads||Forum||Replies||Date|
|C||Circuit for 2 coil latching relay||General Electronics Chat||28|
|K||I need help with my circuit (optocoupler, transistor, relay)||General Electronics Chat||14|
|B||What can I modify-add to this circuit to get a short pulse to trigger a DPDT relay||General Electronics Chat||20|
|M||Struggling to understand bizarre voltage drop on parallel relay circuit.||General Electronics Chat||22|
|H||please help a NOVICE understand a circuit diagram that says "load (relay)'||General Electronics Chat||4|
|Circuit for 2 coil latching relay|
|I need help with my circuit (optocoupler, transistor, relay)|
|What can I modify-add to this circuit to get a short pulse to trigger a DPDT relay|
|Struggling to understand bizarre voltage drop on parallel relay circuit.|
|please help a NOVICE understand a circuit diagram that says "load (relay)'|
by Gary Elinoff
by Steve Arar
by Luke James