89Views4Replies

# I need help understanding how to make simple circuits? Answered

I'm very new to electronics, and I want to understand the basics of making simple circuits. For the longest time, I have not understood how people can determine how much power is needed for X amount of LEDs, and how much resistance and so on. Yes, I have taken a physics class, but I'm very rusty on it all :P I hardly remember any of it and I'm hoping the community will help me out. So again to sum up my problem, I need help determining how to make simple circuits that include things like light dependent resistors, LEDs, motors, and simple things like that and especially how do I determine how much voltage, amps, and resistance I will need in the circuits.

Tags:

The forums are retiring in 2021 and are now closed for new topics and comments.

Getting started is really difficult

I was an electronics engineer but I got interested because my parents bought me (at my request) a phillips EE kit (Electronic Engineer) for christmas.

This is a great way to start - The Phillips kits no longer exist except second hand but similiar kits are around.

OK they are aimed at kids BUT everyone starts somewhere and most of the ones I have seen work well at giving you the basics.

TRY to understand what is going on:

Components - Resistors, capacitors and inductors

Transistors and Ic's, FETs , micro controllers

The rest is easy!!!

Ive just started experimenting with circuits to and i just did a few simple circuits on here and then just started experimenting with different things and learned through trial and error.

Simplest way of learning is probably using an internet search on each narrow topic you want to play around with.
There are LED current limiting resistor calculators out there. Read the explanation of the calculation and try to do it yourself, then check with online calculator. About light dependent resistors etc take a look at few different explanations and schematics. And get a breadboard to try things out, it makes learning fun and effortless.

You're probably best off either investing in a "Dummy's Guide..." type of book, or just following some basic circuitry instructables and then investigating what happens when you substitute different value components.