OpenSprinkler › Forums › Hardware Questions › OpenSprinkler › OpenSprinkler 3.0 DC with >9 VDC? › Reply To: OpenSprinkler 3.0 DC with >9 VDC?
Can you explain what kind of control unit this is? To determine whether it works with OS3.0DC, there are two things that matter:
– OS3.0DC can accept any input voltage from 5V to 12V DC and the stable output voltage is the same as input voltage (I say ‘stable output voltage’ because OS3.0DC sends an impulse high voltage to energize the valve, so there is a momentary high voltage, but then it lowers that voltage to the input voltage to provide holding current). If your unit requires at least 10VDC, you can use 12VDC as power supply.
– Each zone on OS3.0DC supports up to 1 amp output current (technically it can go even higher but the PCB traces are not really designed to handle very large current). So if your control unit draws less than 1 amp then it should be ok.