I have seen several 555 timer projects here that run at around 60Hz but they are mostly using an output transformer to change the voltage ratio, such as in a 12VDC to 120VAC inverter. I need a pulsing AC signal of any shape that is isolated from the 12VDC power source that supplies it which a 1:1 transformer should provide.
I know people suggest for many to wind their own transformers for unique applications such as thee but these get bogged down in theory too quickly for me and I guess I am looking for something that tells me how many wraps of what gauge wire around which coil.
I had this level of training as my backgroun in the 1960's but let's just say it's been just a little too long since I left the classroom.
If anyone could help me out, it would be appreciated. I am looking to emulate in a very sloppy fashion the output of a 6VAC "wall puck" power transformer. Its only for charging a portable phone (they all require AC for some reason) from a 12VDC power supply.
I've also discovered that since VOIP adapters ground the phone line to the power supply, I have to have the 6VAC that keeps the phone charged isolated from the master 12VDC ground which is also my "sole" power supply (there's no AC outlet available in this isolated spot I'm setting it up and only 12V to run everything and running an energy wasting DC to 120VAC power inverter is not an option either, as I need something efficient)
I know people suggest for many to wind their own transformers for unique applications such as thee but these get bogged down in theory too quickly for me and I guess I am looking for something that tells me how many wraps of what gauge wire around which coil.
I had this level of training as my backgroun in the 1960's but let's just say it's been just a little too long since I left the classroom.
If anyone could help me out, it would be appreciated. I am looking to emulate in a very sloppy fashion the output of a 6VAC "wall puck" power transformer. Its only for charging a portable phone (they all require AC for some reason) from a 12VDC power supply.
I've also discovered that since VOIP adapters ground the phone line to the power supply, I have to have the 6VAC that keeps the phone charged isolated from the master 12VDC ground which is also my "sole" power supply (there's no AC outlet available in this isolated spot I'm setting it up and only 12V to run everything and running an energy wasting DC to 120VAC power inverter is not an option either, as I need something efficient)