not a question ... well not really
September 7, 2011
Well I have being reading all about circuits and resistors ,Transistors, diodes to get a understanding of how things work ..... its amazing how much you take for granted in life eg stick a few batteries into your Childs toy and it works .... you don’t need to know why . But after a week of reading on the internet I feel amazed at how little I knew about anything electrical as I never thought about it before.
For example a motor .... didn’t know you can also use a motor to make power eg turn the spindle really quick and if its connected to a bulb the bulb would light always thought you needed a dynamo .
As for resistors transistors and diodes they were just parts on a circuit board only part I needed to know about was a fuse eg if socket in the house didn’t work id check the fuse box and replace if needed .
Now I have a basic to good understanding of some of these .... even the transistor Im confident I can use this without too much problem .... will probably make a led light up using a transistor and a photocell sensor to trigger it when I start trying things out rather than just reading about them .... hopefully in another few weeks as I hope to get some tools eg multimeter solder iron bread board some diodes resistors transistors and such.
Still some simple things are confusing..... eg batteries ..... Never gave a second thought to putting 4 batteries in a toy .... now I find out that the 4 are probably connected together in a serial pattern to total there volts eg 4 1.5v = 6v and even more than that there rating eg 800mah stays the same ..... or else connected in a parallel pattern but the volt stays the same but there 800mah becomes 3200mah .... so kind of confused as to which is most important the volts or the mah.
Also understand how capacitors operate eg they store up the current and can then release it just haven’t seen a good example of how this works on a circuit board eg seen a lot of them on the digital radio I pulled apart but don’t know how they do what they are designed to do eg why do they store up the current and why do they release it.
But have to say really enjoying learning all about this stuff and looking forward to putting it to practical use.
Oh ye circuit board diagrams are still confusing to read he he he ...