Hobby Electronics Basics

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Here's what I know about negative feedback

I have a BSEE. Negative feedback has many benefits, but "maintaining stability" is not one of them. Just the opposite, i...
16 comments posted 10yrs
posted by chrisv
16 comments posted 10yrs posted by chrisv

UPS with 12V output

Hello, I have quite a lot of devices that works at 12 or 5V (router, eth. switch, raspberry, etc.). Everyone has is own...
8 comments posted 10yrs
posted by jack4747
8 comments posted 10yrs posted by jack4747

1 Micron Antenna for Solar Power

I always wondered why you couldn't do this: http://nextbigfuture.com/2015/09/solar-cells-will-be-made-obsolete-by-3d.htm...
5 comments posted 10yrs
posted by bretcahill
5 comments posted 10yrs posted by bretcahill

Power Required To Draw Down All 7 of the 7 Seas

"Who gave us the stomach to drink up the ocean?" -- Nietzsche This is another interesting back of envelope calculation:...
5 comments posted 10yrs
posted by bretcahill
5 comments posted 10yrs posted by bretcahill

OT Lipo battery charger

So my son is into RC... He's bought some old RC cars back to life and watns to run them with new Lipo batteries. We are...
1 comments posted 10yrs
posted by gherold
1 comments posted 10yrs posted by gherold

Banana plugs and jacks

OK this is a silly question. You've got banana plugs and jacks... which is the female and which male. (I can find it bot...
18 comments posted 10yrs
posted by gherold
18 comments posted 10yrs posted by gherold

Looking for a tube only radio or radio kit

Looking for a tube only radio or radio kit AM or FM or AM FM More than standard broadcast range is desirable.
15 comments posted 10yrs
posted by Dan
15 comments posted 10yrs posted by Dan

Fan Test

Hi, The following Fan was used in several of our prototype systems http://www.mouser.com/ds/2/471/San_Ace_92LG25_E-5417...
9 comments posted 10yrs
posted by jsscshaw88
9 comments posted 10yrs posted by jsscshaw88

OT: Rear/Back-up Camera

I'm trying to find specifications for... Toyota SU003-05965 rear-camera My son is adding it to his monster truck, think...
4 comments posted 10yrs
posted by To-Email-Use-The-Envelope-Icon
4 comments posted 10yrs posted by To-Email-Use-The-Envelope-Icon

Name of widget to control amps?

Hello, This is the "Basics" group, and yeah, I have a question that's most definitely basic... I want to purchase a sma...
47 comments posted 10yrs
posted by em
47 comments posted 10yrs posted by em

Schematic symbol?

What is it? http://imgur.com/8tDq622 Thanks.
4 comments posted 10yrs
posted by not
4 comments posted 10yrs posted by not