Electronics > Beginners
Voltage Drop at Breadboard
anbudroid:
Total Current Consumed by the LCD and Arduino Board is just 120mA . am not using prebuild breadboard cables I know they were not quality products so that I use single stead 22AWG Cable for BreadBoard
Jwillis:
Using those cheap bread boards is fine.They work just as well as the expensive ones. Check that you have enough supplied current .
metrologist:
I have ten breadboards and I've been using a spool of old school solid copper 4 conductor phone line to make jumpers. It is a little thin but solid copper and cheap.
Some of Arduino clone regulators are weak, if you are using that. I get low voltage.
anbudroid:
--- Quote from: metrologist on March 10, 2019, 04:30:49 am ---I have ten breadboards and I've been using a spool of old school solid copper 4 conductor phone line to make jumpers. It is a little thin but solid copper and cheap.
Some of Arduino clone regulators are weak, if you are using that. I get low voltage.
--- End quote ---
Yes Sir. My bench power supply current is 1A . But the circuit Just need below 200mA . and at this point total current consumption of the circuit including LCD is 150mA from Bench PSU.
anbudroid:
--- Quote from: metrologist on March 10, 2019, 04:30:49 am ---I have ten breadboards and I've been using a spool of old school solid copper 4 conductor phone line to make jumpers. It is a little thin but solid copper and cheap.
Some of Arduino clone regulators are weak, if you are using that. I get low voltage.
--- End quote ---
Am not trust Arduino's inbuilt passive regulator. that's why am using separate DC-DC Buck Convertor. I tried with phone line cable too just now.
alternatively give 12v to bread board and connect a load to other half side of the breadboard voltage drop is 400mV . so nominal resistance of my bread board accourding to ohms law is 0.2ohms. is this correct ? total current by the load is 500mA
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