I am developing my own PLC that is powered off a 24VAC transformer that is shared with a thermostat and some other controller devices. I wanted to isolate the 24VAC going into my PLC to protect it and I've been trying to find some small isolation transformers to attach to my PCB. I found a link off aliexpress for a cheap audio isolation transformer:
Can I use this to isolate the 24VAC? How can I derive the max amps and power loss from the values given by the seller?
- I am currently using a half wave rectifier
- I was going to configure the isolation transformer
- Here is what the audio isolation transformer on my PLC will look