There is a behaviour that is needed to be achieved with a circuit, that I believe can be done with a relay. However, OIcan't see to get it right..
The scenario is the following:
- The relay will control the connection of a high power supply (30A) to a load
- Besides this, there is one signal wire and one low power supply
- The relay should turn on when the signal goes High, but feed off the low power supply
- After the signal goes High, the relay must stay on as long as the low power supply is available, even if the signal goes Low.
What relay circuit should I use for this?