bd13
New Member
Can you have oposite current flow, from two different power sources, on one wire? i am trying to get a relay to trigger from a 9v power source but stay latched from a 1.5v battery (drop voltage is only .25v), but when the relay is latched it also needs to short the 9v accross a igniter (rocket type) to get it go off. This leaves both the 1.5v battery and the 9v using the same common to NO pins on the relay. I tried using oposite current flow and diodes to try and keep the 9v current from trying to go accross the smaller 1.5v battery, but it doesn't work.
opperation description:
My main goal is to get the relay to turn on from the "timer" input (which pulses), and only the 9v turns the relay on. the 1.5v is activated when the relay turns on and it used to keep the relay on (creates a latching relay, forms a circuit through the coil, common, and NO pins). When the relay is latched it will also short the 9v over the common and NO pins and then through an igniter (rocket type) to set it off.
opperation description:
My main goal is to get the relay to turn on from the "timer" input (which pulses), and only the 9v turns the relay on. the 1.5v is activated when the relay turns on and it used to keep the relay on (creates a latching relay, forms a circuit through the coil, common, and NO pins). When the relay is latched it will also short the 9v over the common and NO pins and then through an igniter (rocket type) to set it off.