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Topic: Basic Ohms law problem (Read 2 times) previous topic - next topic

kculm

Wow, I am really impressed on all the input I got. This goes a long way to helping me learn.

Thanks  everyone.

kculm




A diode would be better. Silicon diodes drop the voltage by about 0.7V when it passes through them. Two of them in series would drop it by 1.4V, etc.


Would I just put it inline with the Pos. side of the power?

retrolefty


Wow, I am really impressed on all the input I got. This goes a long way to helping me learn.

Thanks  everyone.



The problem with that is you seem to be (or wanting to) learning basic electronics by memorizing a series of 'rules', rather then studying basic electronics DC theory which covers ohm's law and once completely understood would allow you to answer all those questions yourself once you are then ready to be introduced to semiconductors. Trying to learn by dealing with semiconductors (leds for example) and basic voltage/current/resistance at the same time is not a good way to start one's education into electronics, at least that is my opinion. There is a reason for the basic order of the subjects presented in learning electronics fundamentals and deviation from that is certainly an invitation for having gaps of understanding and substituting 'rules' for proper understanding of the principles and theory.

Lefty

JimboZA

I'm giving serious consideration to buying the latest edition of Practical Electronics for Inventors for me and my daughter to share as we continue our electronics journey.

See this thread.
Roy from ITCrowd: Have you tried turning it off an on again?
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CrossRoads

Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
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