Parallax power supply noise model 555
The Parallax power supply converter has worked flawlessly for the last 7 seven years. Now when a light 12volt is on, you can hear a high pitch noise come out of it. Looked at some other sites said...
Forum Discussion
roller183 wrote:
One other question: The amps of the unit only refer to how fast or how much power goes to re-charging the batteries?
The amp rating is the total current available for both the battery and any 12V items (lights, etc.) to share. A higher rating means the battery will charge faster.
