I am wanting to build a power line carrier circuit. I found a simple circuit I am hoping to build from, but have a few questions. I have looked at several modules online, but have not yet found one that seems to fit what I need. I don't have access to the exact specification at the moment that I have to follow due to it costs a bit of money and I'm trying to sort out if it's going to be worth doing it or not.
The nominal voltage on the left of the transformer will be 12V, but can be as low as 8 and high as 16. It will be normally powered from an automotive battery on a test bench. I believe the actual voltage swing I need to create is 2V below and 2V above the incoming voltage, but will know more once I can access the specification.
Now the right side of the transformer if I use a Vcc of 2.5V would I then see .5V to 4.5V corresponding to the 4V total swing of the incoming power assuming a 1:1 transformer? The next question is as the circuit is drawn I am thinking powering the transistor would then induce a change in the incoming power. What kind of change would it induce? I am guessing it would either raise or lower the incoming voltage one way or the other depending on how the transformer is wired. Would it then swing the other direction due to some sort of field collapse, flyback, or whatever? How do I go about selecting the transformer?
This circuit was found in the application information of an LM2893 https://rocelec.widen.net/view/pdf/cbmtgxstta/NATLS16609-1.pdf?t.download=true&u=5oefqw.
Thanks for taking a look
The nominal voltage on the left of the transformer will be 12V, but can be as low as 8 and high as 16. It will be normally powered from an automotive battery on a test bench. I believe the actual voltage swing I need to create is 2V below and 2V above the incoming voltage, but will know more once I can access the specification.
Now the right side of the transformer if I use a Vcc of 2.5V would I then see .5V to 4.5V corresponding to the 4V total swing of the incoming power assuming a 1:1 transformer? The next question is as the circuit is drawn I am thinking powering the transistor would then induce a change in the incoming power. What kind of change would it induce? I am guessing it would either raise or lower the incoming voltage one way or the other depending on how the transformer is wired. Would it then swing the other direction due to some sort of field collapse, flyback, or whatever? How do I go about selecting the transformer?
This circuit was found in the application information of an LM2893 https://rocelec.widen.net/view/pdf/cbmtgxstta/NATLS16609-1.pdf?t.download=true&u=5oefqw.
Thanks for taking a look