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 110307 individual articles here that are part of 10198 discussions
Please see below the list of the most recent and the best rated articles in Hobby Electronics Basics

The most recent discussions

Need help identifying and locating DIP-packaged trimpot resistor

March 23, 2017, 3:59 am

Aloha! I'm reverse engineering an early 1980s era PCB. On the board is this DIP-packaged trimpot resistor. Its dimensions is typical of a 14-pin 74-series package. The part consists of three 10K oh... Read more »

Might Be Stupid, But I Want Soe Opinions

  [ 2 3 ]
March 16, 2017, 11:31 pm

Got this camera, runs on two AA batteries. I want to eliminate them. I do n ot want USB, I want to have a three volt walwart, or one that is regulated down to three volts. I am not willing take ... Read more »

OT electronics nostalgia, NYC subway system

March 14, 2017, 10:13 pm

http://nycsubway.org/wiki/Power_Generation Wonderful site of the history, design, construction etc. of the NYC subway system. Vintage pix of the 75 RPM Steam piston plants that supplied 25 Hz 11 ... Read more »

Standing Waves

March 13, 2017, 2:02 am

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

sequential transistor relay

March 12, 2017, 10:50 am

Good Day Sir/Ma'am, I'm a technician and I am in need of schematic diagram of a sequential four transistor driven relay which i will needing for my project as part of my study. I have a single... Read more »

Cables and Currents

  [ 2 ]
March 3, 2017, 8:20 pm

This may be a stupid question, but here goes. We all know that cable is graded for its current carrying capabilities according to its cross-sectional area. BUT, could one conceivably pass excess... Read more »

Re: California too incompetent to generate electricity from the sun.

March 3, 2017, 12:22 pm

On Thu, 02 Mar 2017 08:25:07 -0800, John Larkin I think that honor goes to India today (648 MW) and they use photovoltaic's. Never hire an engineer named Murphy.... Read more »

OT, But How Does This Grabya ?

February 28, 2017, 5:56 am

http://www.xdd.org/ssn/279/36/6363/279-36-6363 Youse folks with money might want to tske a gsnder st that. The best way to kill a place is to spam it. that is what the RIAA and MPAA did to ost of... Read more »

Cheap oscilloscope kit

February 24, 2017, 11:42 pm

I recently built the JYE Tech DSO-150 Shell oscilloscope kit (#15001K) that I got from Banggood for $24 plus a power supply. These are single-channel, low-frequency scopes, but would be useful f... Read more »

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 »

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 »