wifi router got a firmware and box
can be cloned as many as needed, one per simple network segment
it is managing automated routing between segments
Thanks for the answer. i will play with this LNK component. never used it before. I am curious to know the performances of it.
for your design, you have added others functions on your PCB ? such as DC-DC converter ... etc.. ?
my DIN desing is universal. it is for the set of different devices with common 12V power
dc-dc is used to feed MCU from 12V
some questions regarding the schematics:
- does TVS diode 600W 5V is efficient enough? or absolutely need cut off at 160V such as 600W 160A ?
- for the Fuse, a slow fuse 10A is enough i think, isn't it?
TVS need to be for 120-160V in case you supply 230V AC. You can refer to linkswitch designer for your specific needs.
The purpose of this TVS is to be a snubber because of inductive load. Instead of TVS an RC snubber could be used.
it is 3Watts supply, 0.5-1A slow fuse is fine
some more details about addressing
global adress is 16 bit number. 12 most significant bits are defining network segment number while 4 less significant bits are providing nodeID
section 0xFE00-0xFEFF is reserved for local broadcasting, 0xFF00-0xFFFF - for global broadcasts. Etc. 256 broadcasts of each type
segments and differenciation between local and global broadcasts are needed for efficient support of bridging and routing.
bridging is a simplified version of routing. bridging is connecting network segments on different physycal inrterfaces while routing can assume to bypass many physical interfaces between (routing throuth).
one of the bridge example is a link between wired interface and MQTT.
one of the routing example is a link between 2 wired interfaces across public Internet
each network segment can have 15 nodes. nodeID = 0 is a special local segment broadcast addressing all devices in segment.
each physical interface can have several segments, etc. there is no limitation to have 15 nodes on physical interface. you just add as many segments to interface as you need to have devices
@jeremushka if you will check datasheet on lnk3002 you will find that it is a regular none isolated acdc
The know how of this design for 2wire installation not in transformer, it is in disconnecting load on positive wave in case of voltage drop
A saw similar desing without transformer, it was a re engineering of radio switch
@jeremushka am i got it correctly that you need 5v without having neutral wire?
I never saw solutions for that type of power source using transformers, regular 50hz or even switching
There are a few different types of schematics i saw, but all are transgormer less
Thanks. What is the purpose of the inductor at the output of the circuit? why not to use one also after the bridge rectifier?
inductor at output is to reduce riple
on hight voltage side will be better to put filter but there is no place for it
inductor as such will not bring too much value
@jeremushka for sure
schematic is standard, simplified version from datasheet
D8, D11 and R22 are optional, it is to be able to source power from different sources (for example different phases, or from main power and from generator).
D12 I'm using 11V to have output at about 12.1V