Electronic – Why there is a voltage drop while connect multiple 12 V or 24 V solenoid valve with a 24 V DC adapter

microcontrollersolenoidsolenoid-valve

I am doing a water plant project. I need to control multiple solenoid valves with my micro controller circuit using relays. When I connect more than 4 solenoid valves (12 V) with a 15 V adapter it will cause a voltage drop and the solenoid valves are not working.

Questions:

  1. Why does this happen and how can I fix this problem?
  2. How can I connect multiple solenoid valves (ex:64 solenoid valve) with a micro controller using relays?

Best Answer

As answered in the comments, your power supply is not sufficiently powerful to supply the needed current. Current required is cumulative for device's in parallel, so you must add the needed current numbers together.