A1. The value of R35 is 3 ohms / 6432 Size.Q1. What is the value of R35?
Q2. What is the current rating of the main power?
If you divide 12V by the answer to Q1, is the result greater than the answer to Q2?
Here's my desired circuit behavior:Are you actually switching a 3R resistor onto the bridge output?
I fail to see how your circuit would work well at all.
What is the signal you are wanting to send?
More details PLEASE!
Are you sending smoke signals ?
EDIT: What data rate are you looking for?
And just switching a 6A load onto the rectifier output is not the way to go!
Ok. Now, what comms are you looking for? Do you have the data rate? This will have a great impact on how you need to design your circuit.A. Yes!
That circuit is a client product. There is another host product with the same plc circuit and it is to communicate with the host and client on dc plc power!
I want to communicate with the PLC power line using the same protocol as the UART signal.Ok. Now, what comms are you looking for? Do you have the data rate? This will have a great impact on how you need to design your circuit.
Is there any way you could see to use a radio link? That may be the easiest option. Small radio links, based on ESP8266 or ESP32 boards may be worth looking at.
As you said, changing R35 to 2.2k does not burn the resistor.Ok. Now, what comms are you looking for? Do you have the data rate? This will have a great impact on how you need to design your circuit.
Is there any way you could see to use a radio link? That may be the easiest option. Small radio links, based on ESP8266 or ESP32 boards may be worth looking at.
you means..You will most probably have quite a problem modulating the power between 30V and 36V at "UART signal" speeds. For one thing, the PLC power filtering will need to be isolated from the signal.
Why can you not use radio? It looks you are adding external circuits to modulate the power anyway. An extra small matchbox sized board at each end would give you a radio link.
Still, adding a series transformer to each end of the power line could work, then impress a tone onto the line for the data signal.
Very much like a radio link.
I wonder why just running a twisted pair wire link is not an option?
Actually, the place I want to use with this circuit is the parking guidance system. The main controller is trying to send and receive commands to and from various parking guidance sensors through DC PLC. But the problem is that I don't have enough knowledge.You might consider a system like DCC used for model railways.
It uses a square wave symmetrical around zero so a bridge rectifier will produce a DC supply voltage with the data being passed in the pulse timing.
https://dccwiki.com/DCC_Tutorial_(Power)
First of all, the circuit I posted at the beginning was written by looking at the actual product and circuit in use elsewhere.
The circuit you posted would not work.First of all, the circuit I posted at the beginning was written by looking at the actual product and circuit in use elsewhere.
by Aaron Carman
by Duane Benson
by Aaron Carman