Hobby Electronics Basics

  1. Home
  2. Hobby Electronics Basics
9387 Threads Posts
to

Worth reading in Hobby Electronics Basics

GE Halogen 120v 100bt/sw/cd--Safe?

I just bought a long liFe 100W GE halogen bulb. It has a base like a conventional bulb for household use. I plan to use...
6 comments posted 20yrs
posted by wolf_tracks
6 comments posted 20yrs posted by wolf_tracks

RS232 Voltage Levels

I've got a datasheet for a chip that takes an RS232 serial input with a protocol of 9600,N,8,1. It indicates the voltag...
32 comments posted 20yrs
posted by alchemcj
32 comments posted 20yrs posted by alchemcj

Determining Electromagnet Polarity

This would be easy to figure out if you had some sort of 'marked' magnet lying around that indicated N and S poles. How...
13 comments posted 20yrs
posted by blahbleh666
13 comments posted 20yrs posted by blahbleh666

AMATUER LOOKING FOR HELP WITH CHIP

Can anyone please help me to find a datasheet, or at least pinouts for the Texas Instrument TSP5220CNL voice synthesis...
0 comments posted 20yrs
posted by UFO-Joe
0 comments posted 20yrs posted by UFO-Joe

preset enable

I have a counter with a two digit seven segment led display. When i turn the power on it will display random numbers. Ho...
2 comments posted 20yrs
posted by darlapphood
2 comments posted 20yrs posted by darlapphood

Timing recovery and Carrier recovery

Hi all, I am studying digital receiver and confused with timing recovery and carrier recovery. I think carrier recovery...
17 comments posted 20yrs
posted by zhushenli
17 comments posted 20yrs posted by zhushenli

Quiz Buzzer

Hi all, I would like to know a simple circuit for QUIZ PROGRAM. Thanks in advance. sena.
3 comments posted 20yrs
posted by tsenapathy
3 comments posted 20yrs posted by tsenapathy

Finding a transformer's CT

From a smashed VCR I plucked out its transformer that's got two primary taps and three secondary. Using the consistency...
8 comments posted 20yrs
posted by bos
8 comments posted 20yrs posted by bos

ID a varistor on a dehumidifier?

I have what I think is a varistor. About a 5mm diameter disk, burnt around the upper edge. It is marked with the manufa...
0 comments posted 20yrs
posted by ogyver
0 comments posted 20yrs posted by ogyver

Stereo zoom/boom microscope

Need one of these for fine pitch SMD work. The microscopy groups have deemed just about all made in China to be crap un...
4 comments posted 20yrs
posted by oparr
4 comments posted 20yrs posted by oparr

Do Permanent Magnets Dissipate?

Hello all, The subject title pretty much describes my question. I was discussing various topics, such as electricity, t...
19 comments posted 20yrs
posted by xxjunoxx
19 comments posted 20yrs posted by xxjunoxx

Direction of a Magnetic Field for a Current

I thought the right hand rule applied to determining the direction of B/H. One simply wraps their right-hand around the...
13 comments posted 20yrs
posted by wolf_tracks
13 comments posted 20yrs posted by wolf_tracks

Correct way to drive a pulsed LED

All right... I'm starting a new topic because I think some of you might not be taking me seriously anymore... ;) I have...
7 comments posted 20yrs
posted by grant
7 comments posted 20yrs posted by grant

biasing

seasons greetings, I'm new to the electronics subject, basically i'm a computer science student.i'm unable to understan...
2 comments posted 20yrs
posted by raghujindia
2 comments posted 20yrs posted by raghujindia

PANASONIC DECT problem

Hello all, I have PANASONIC DECT cordless phone (one base station and six handsets The system permiting internal calls...
0 comments posted 20yrs
posted by dautm
0 comments posted 20yrs posted by dautm