Folks: I bought a battery charger called a Vapcell Sr Plus Super charger to charge my Ni-Mh/Ni-Cd or Li-Ion batteries. I like its features, etc. So far works great. However, the DC power supply is noisy. Meaning I can audibly hear a constant buzz when not plugged into the charger and when plugged in, and charging a cell, you can hear a pulsing sound. Not good. Almost too noisy to share my office as it distracts me. Clearly it's a very inexpensive converter. Built in China..but most are. However, this must have some bad internal design issues. I'm seeking a new 12V 5.0A = 60 Watt charger that is quite. I found this one but I have NO idea how to determine if it will be quite and not buzz. I know don't know what to look for in build quality from a spec sheet and I hate the idea of buying to try and then maybe send back. Is there something that would indicate if the power supply would be quite or of build quality to not buzz like that? I know all electronic conversion units (power supplies) make noise; however, seeking one that doesn't make audible to the human ear noise.[h3]https://www.trcelectronics.com/View/Power-Partners/PSAD65-12-B1.shtml[/h3] or this[h3]https://www.trcelectronics.com/View/Mean-Well/SGA60U12-P1J.shtml[/h3] Here is what my current power supply looks like with labels.[h3] [/h3]Thanks for your thoughts. TKH

I am replacing the switches in my house, and I'm confused about one of the 3-ways. I'm trying to understand how it's configured. The switches control two light fixtures. When I look in the first box, I see the following. There is a 14/3 coming into the box. Red traveler at the top, white traveler in the middle, and black connected to bottom common. As an aside, I noticed that the back push-in connection has failed, and the wire is pulling out. In the other box, I see the following. The top wire is the 14/3 black. The middle wire is the black from a separate 14/2 that comes into the box, and the bottom common is the red wire from the 14/3. The red wire is marked as hot with black tape. If anyone can help me understand this, I would really appreciate it. If you need more pictures or clarification, just let me know.