TOPIC: QuestionTransformer problems, Output 15.8volt not 12 Volt
Transformer problems, Output 15.8volt not 12 Volt #769
Hi, I have just wired 2 x 12 volt outlets to allow us to charge our phones overnight. I wired them into the 12 volt light circuit and foolishly did not check the voltage just assumed it would be 12 volt.
When I put an 12 volt USB adaptor it fried immediately. So in a genuine male approach I then checked the voltage and it was 15.8 volt with nothing else on and 14.3 volt with the internal lights on.
The 12 volt lights seem to work OK, I have not tried any other appliance to see if they work.
Can anyone comment about the sensitivity of a USB charger adaptor to the extra few volts. I am goint to try a 12v-24v USB adaptor to see if this copes.
Also the sockets are wired centre positive, outer housing negative, I believe this is correct polarity