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 101785 individual articles here that are part of 9403 discussions
Please see below the list of the most recent and the best rated articles in Hobby Electronics Basics

The most recent discussions

Suppress transients on old burglar alarm


June 4, 2018, 9:55 am

My 20 year old burglar alarm control has developed a fault that I've spent the last couple of days trying to fix. Before I ditch it and go through the hassle of installing a new one I'm seeking hel... Read more »

Capacitor Tester

  [ 2 ]
June 3, 2018, 3:21 pm

I dont have a capacitor tester. (Well a very small one on my Digital meter) I want one that is good general use. Some seem to only go to 100 or 200 uF. I think you really need something that goes t... Read more »

current regulator


May 30, 2018, 3:23 pm

https://www.diodes.com/assets/Datasheets/AL5890.pdf The block diagram shows this as a closed-loop regulator, not just some jfet sort of thing. The high minimum voltage and unspecified capacitance/... Read more »

What size of surface-mount components is good for a beginner?

  [ 2 ]
May 18, 2018, 8:43 pm

Greetings one and all I am laying plans to start working with SMT for the first time. Would 0805 components be a suitable size for a beginner, or would another size be appropriate? I have been a... Read more »

A balanced 12AX7 based buffer


May 12, 2018, 2:34 am

I'd like to design and implement a simple 12AX7-based buffer for musical instrument DI purposes. I'd like the output to be balanced for ... no good reason at all beyond having balanced inputs to p... Read more »

The wiper in a variac


May 9, 2018, 5:37 pm

I have been thinking about the way a variac works. One thing that puzzles me, is the wiper design: If the wiper is too narrow, the output voltage will cut out when the wiper is between two turns o... Read more »

Trickle charge C-type NiMh?


May 7, 2018, 8:57 pm

I have some inexpensive 220 mAH C-type Ni-Mh batteries, https://www.amazon.co.uk/gp/product/B07BJ85NNZ The equivalent 3300 mAh C-Types I bought a couple of years ago specified charging with 330 mA... Read more »

A question about relays

  [ 2 ]
May 7, 2018, 9:38 am

I was poking around in my truck the other day and had cause to open up the starter relay. (not the solenoid, the relay that energizes the solenoid) I was amazed at the size of the contacts. They ... Read more »

Anyone here know BLDC motors well? Hobby ones particularly?


May 7, 2018, 12:36 am

I want to use a hobby BLDC motor to power a compact high speed spindle to be used for engraving and the like. Mainly because they are so compact for the power and speed. I cannot find, for a pri... Read more »

Using a TO-220 heat sink

  [ 2 3 ]
April 26, 2018, 9:17 am

Hi, To attach an LM317 (for example) in the TO-220 format to the corresponding heat sink (see link below), is it useful to apply any thermal paste in addition to the flexible mat that comes with t... Read more »

Click here for other recent discussions »

The best rated discussions

rating
5

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 »

rating
5

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 »

rating
5

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 »

rating
5

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 »

rating
5

Max Frequency of SM 118A counter?

  [ 2 3 ]

Anyone know the maximum frequency of a Heathkit SM-118A? I have been all over Google with little luck. One guy said it would go to 1 GHz maybe 2 GHz, I don't think so. ... Read more »

rating
5

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 »

rating
5

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 »

rating
5

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 »

rating
5

Satellite radio - radio validation


I'm curious, can someone provide a simple several paragraph, basic explanation of how satellite radio authentication works? eg. If the radio is only a receiver and I cancel my subscription how does ... Read more »

rating
5

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 »