Hobby Electronics Basics

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Controlling a motor with a transistor and a PIC

Hello again, I'm working on a new PIC experiment in which I'm trying to control a motor. I'm ignoring the speed of the...
5 comments posted 20yrs
posted by brickwalden
5 comments posted 20yrs posted by brickwalden

Solar charging batteries in wide temperature range

I am planning on continuously trickle charging batteries with a solar panel. Temperatures will vary widely, with temps...
1 comments posted 20yrs
posted by evangarich
1 comments posted 20yrs posted by evangarich

Software for block diagrams

Any recommendations for software that can be used to sketch block diagrams of circuits? Doesn't have to be fancy - usabi...
15 comments posted 20yrs
posted by a
15 comments posted 20yrs posted by a

multi white led circuit

I am wanting to make a light source for a video projector. I would like to use 640 leds in a space of about 6"x9" Consi...
16 comments posted 20yrs
posted by john
16 comments posted 20yrs posted by john

etchant stir

I came up with probably an old scheme but simple enough to circulate etchant in a pcb tank. Start with a plastic soda c...
16 comments posted 20yrs
posted by Jamesthompson2002
16 comments posted 20yrs posted by Jamesthompson2002

AC Adapter Needed

I am looking for a AC Adaptor Model: JT-12V3000 Input: 230-240v AC 50Hz Output: 12VAC 3000mA Max: 36Va It is for the li...
5 comments posted 20yrs
posted by screechyboy
5 comments posted 20yrs posted by screechyboy

Input jack switching

I have just started out building little effects stomp boxes for my guitar, and have had good success with my first one....
10 comments posted 20yrs
posted by chase_p_a
10 comments posted 20yrs posted by chase_p_a

semiconductor

can anybody explain the fundamentals of energy bands in materials ( like a professor not like a lecturer, plz dont mind)...
2 comments posted 20yrs
posted by aparichitudu_407
2 comments posted 20yrs posted by aparichitudu_407

12VDC linear actuator

I am working on a robotics project and need to buy or build a 12VDC linear actuator with a stroke of about 3-4 inches (...
7 comments posted 20yrs
posted by nuisancewildlife
7 comments posted 20yrs posted by nuisancewildlife

AC Circuits and phase shifts

Hi, Phasors are nice and all mathematically, but I'm trying to understand phase shifts intuitively, and I'm unable to s...
7 comments posted 20yrs
posted by omezrich
7 comments posted 20yrs posted by omezrich

Electric Problem

Hi, I have an electrical problem which I am hoping to solve. Basically I have a moped with an ignition switch which has...
19 comments posted 20yrs
posted by jk
19 comments posted 20yrs posted by jk

How are PC boards made?

Hi guys: How are ordinary copper-clad printed circuit boards made? Is the copper deposited onto the substrate by some pr...
11 comments posted 20yrs
posted by eromlignod
11 comments posted 20yrs posted by eromlignod