Hobby Electronics Basics

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Newbie Question : Board level design

Hi, Upto now I've been building simple little projects on breadboards. Now I'd like to try my hand at designing a pcb b...
12 comments posted 21yrs
posted by fakeemailaddress
12 comments posted 21yrs posted by fakeemailaddress

Signals

Hi, I remembered I read from a book in which it roughly said "The drift rate of an electron is about 35cm/h (I can't co...
6 comments posted 21yrs
posted by jl
6 comments posted 21yrs posted by jl

led questions

hello all. im interested in using some leds for automotive lighting and such. i have a BASIC understanding of electroni...
25 comments posted 21yrs
posted by dakota39l
25 comments posted 21yrs posted by dakota39l

need pinout of FPT100A phototransistor

Hi, I have some FTP100A phototransistors (3) which I want to use to make an optical switch, like an optoisolator. But I...
2 comments posted 21yrs
posted by kc0atc
2 comments posted 21yrs posted by kc0atc

Dc Motor Voltage Rating

What would happen if I had a motor that has markings saying it is a 2.25 hp motor, 130 volt, 18 amp and I pulsed it wit...
3 comments posted 21yrs
posted by pwalinsky
3 comments posted 21yrs posted by pwalinsky

Suggestions for magazine subscription - UK

Hi All, I'd like to subscribe to a monthly practical electronics magazine for the beginner/intermediate level, and would...
3 comments posted 21yrs
posted by you.can.calll.me..bill
3 comments posted 21yrs posted by you.can.calll.me..bill

Motherboard fuses - missing?

I have an Asrock (budget Asus) K7VT4A Pro ATX motherboard with three empty spaces where it seems that fuses would norma...
58 comments posted 21yrs
posted by larrymoencurly
58 comments posted 21yrs posted by larrymoencurly

Metal to metal contact generates RF?

I fly (or crash) radio controlled model planes as a hobby. Engine speed is controlled by a servo which operates a piano...
7 comments posted 21yrs
posted by quietguy
7 comments posted 21yrs posted by quietguy

micro small DC motor

Hi all, I wonder if I can get a DC motor with diameter smaller than 5.0 mm. If that is not exist can I custom order it,...
3 comments posted 21yrs
posted by padmow_69
3 comments posted 21yrs posted by padmow_69

Phase lock loop 4046 ( band width)

hi 1)how can i find loop filter (lead_ lag passive) bandwidth?. And the phase comparator output frequency with this rang...
18 comments posted 21yrs
posted by rbiras
18 comments posted 21yrs posted by rbiras

Self chargeing capacitors?

I recently finished building my Zagi 400, a remote controlled airplane. I used a "12" volt 300 ma charger to charge the...
4 comments posted 21yrs
posted by ngdbud
4 comments posted 21yrs posted by ngdbud