Interesting short read:
I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie
"The critical shortage here is not stuff, but time." - Johan Ekdahl
"Step N is required before you can do step N+1!" - ka7ehk
"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman
"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?" - Lee "theusch"
Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-) - Source Unknown
Please Read: Code-of-Conduct
Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user
This is the circuit that I use a lot for my product.
Please use as a topic in this thread.
In order to omit expensive high wattage resistors, low wattage resistors are used in parallel.
Ok, I'll byte. How is this cheaper? a 1 watt 120 ohm resistor is maybe $0.22usd?
5 1/4 watt resistors are $0.10 each:
PLUS then there is the PCB layout/fab costs.
so how is 5 resistors cheaper to use than one ?
The examples are just in line with my special environment.
In my case there is only a small amount of production, so I don't want to pay for the purchase, maintenance and management of the 120Ω that I use only.
OK - but that wasn't what you said in your first post!
Expensive I say is not determined only by the unit price.
Sorry at the lack of explanation.
Should we write high cost?
I think the subject other than the OP should be dropped before the fights start.
AN-1057 worthes to remind again, is mentioned several times before in this forum.
There are also robust RS-485 ICs that can survive from wiring faults and ESD of harsh environments.
IC manufacturers use keywords such as:
© 2022 Microchip Technology Inc.