Please excuse my ignorance, but I am relatively new to electronics. Sorry, also, for using the LED schematic. I could not find one for a CFL lamp.
I am using a solid state relay (SSR40DA http://www.fotek.com.hk/solid/SSR-1.htm http://www.datasheetspdf.com/datasheet/download.php?id=789332) to control a CFL lamp. I have measured voltages across 3 points in the circuit (AB, AC, and BC). I did the measurements in various states (VDC applied/not applied, lamp on/off), and I got a surprising (to me) result. When the lamp switch (D) is on and the relay is off, the voltage across it goes to 28V. Can someone please explain why that would be?
Thank you very much in advance,