Hobby Electronics Basics - Main Page

Do you have a question? Post it now! No Registration Necessary

Hobby Electronics Basics - for you, electronics enthusiasts!
Web, RSS and Social Media interface to sci.electronics.basics
There are 110206 individual articles here that are part of 10189 discussions
Please see below the list of the most recent and the best rated articles in Hobby Electronics Basics

The most recent discussions

Bipolar current limit

  [ 2 ]
February 20, 2017, 7:14 pm

OK this is perhaps overkill.. see footnote. So I've got an indicator LED (bi-color) the input is the error term from a thermal loop, and I turn that into an LED current. I was thinking it might... Read more »

Connector rant

February 14, 2017, 7:33 pm

Sorry I spent part of the morning looking for a connector.. pcb-pcb right angle. So why are connectors more expensive than opamps? And why is a 2X8 connector ~$1.50 cheaper than it's 2X6 broth... Read more »

Top Science Rule

February 14, 2017, 6:38 pm

http://www.rbduncan.com/toprule.htm Read more »

Transistor circuits, book, devices, etc

  [ 2 3 ]
February 7, 2017, 9:50 pm

I though I'd like to learn a bit about electronics and to that end I'd like to buy a book of transistor circuits, a breadboard, and various components to experiment. Can anyone recommend a book ... Read more »

relay circuit

February 1, 2017, 6:12 pm

Hello- I need help in designing a circuit which would take an input from any of 3 momentary switches and then operate a relay. The relay needs to latch but only after any of the momentary switches ... Read more »

Electric Motor Cost/Watt Is Impervious To Size

January 30, 2017, 6:49 pm

There doesn't seem to be much in the way of economies of scale when it comes to the cost/watt of electric motors. Most 50 kW motors cost between 6 cents / watt and 20 cents / watt. Most 1 kW motors... Read more »

Question about soldering iron tip

January 24, 2017, 12:48 am

I have a plain 30-watt pencil iron. It's this one: https://www.amazon.com/gp/product/B00KXX6RLA/ The tip is almost 3 inches long, and when fully inserted only about 3/4 inch protrudes out of the... Read more »

Links for DIY boost convertor and Joule Thief

January 22, 2017, 7:34 pm

I'm trying to learn about these. I thought I would share. https://www.youtube.com/playlist?list=PL4Eg18Oxse-_Vz7uSH7ZpWT4zFBozLmiF Read more »

Sayonara, Eagle

  [ 2 ]
January 19, 2017, 6:06 pm

So, I got an email from Autodesk announcing that Eagle is now software-as-a-service, with the pro version renting for $65 per month per seat. Sayonara, Eagle. Too bad. Cheers Phil Hobbs -- D... Read more »

It's hard to filter a spike,

January 19, 2017, 12:41 am

This comes out of my weird 60 Hz pickup thread on sed. It seems like a basic thing, hence SEB. I've got a Fet gate drive that couples, via a common cable into a signal line. (C_couple ~= 10-100p... Read more »

Click here for other recent discussions »

The best rated discussions


Soldering Copper to Phosphor Bronze

Does anyone know if soldering copper wire to Phosphor-Bronze make a solid and reliable electrical connection? Would it make much of a difference if the copper wire is stranded or solid? If there is a... Read more »


Software for PIC 16F876

Hello, I want to built a simple datalogger with a PIC 16F876, and found a nice schema on the net. My problem: te software (source) is written in C, but i need a hex files to program the PIC processor... Read more »


Where to buy a small wheel hub motor?

Specifically, where can I buy a high quality small wheel hub motor (with wheel) like the one used for powered Trikkes? http://www.trikke.com/hd_2/Refurbished-Trikkes/Tribred-E-Kit-Upgrade http://www... Read more »


12V -> 4.8V linear dc/dc step down

Hello, I need a 12V (car) to 4.8V DC power converter. Tight budget, low energy consumption. Even though it's inefficient, a linear step down converter would work. I'm looking for a circuit design. ... Read more »


Need a circuit (220v to 12) low current.

Hi great forum :) i need a circuit to convert the 220v AC to 12v DC , but without coils (i have no experience in coils ;) ) i saw a circuit many months ago using a capacitor and some other parts i ... Read more »


Best Light for reading?

When choosing a Flourescent Bulb for a Task Light what is the best for reading.......my choices are 2700 Kelvin, 3000, 3500, or 4100..... Read more »


Questions in regard to Art of Electronics

I recently started teaching myself electronics in my spare time with the help of The Art of Electronics and its student manual. I have worked my way through the first chapters, but I have some questi... Read more »


How do you test a capacitor?

  [ 2 ]

Just bought a generator and it failed within two hours of usage. Mfg. say maybe capacitor and will ship a new one. But am not sure. I have a voltmeter with capacitor readings. Know how to test for re... Read more »


Thought experiment-will this work?

I think I pretty much understand how induction motors work. A typical single phase motor has a start winding that is approximately in quadrature electrically to the run winding. This provides the p... Read more »


HC08 development under Linux

I've always been singularly impressed by the people who can make lights blink and robots roll and whatnot. I've been trying a foray into that world for about a month now on and off with the apparen... Read more »