Hobby Electronics Basics

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

Worth reading in Hobby Electronics Basics

Radio shack Kit Question on transformer

Hello, I have a kit that I bougfht from RAdio Shack , Here is a link of what I am talking about. ( http://cgi.ebay.co.u...
11 comments posted 20yrs
posted by lerameur
11 comments posted 20yrs posted by lerameur

Using Step Up Transformer

I recently moved from a high voltage (240v) country to a low voltage country (120v). I brought along my home stereo sys...
1 comments posted 20yrs
posted by kennethwongjp
1 comments posted 20yrs posted by kennethwongjp

Low Pass Filter basics

I have a question about low pass filters. I am designing a 2nd order low pass LC filter. What determines the response ty...
7 comments posted 20yrs
posted by toyo22r
7 comments posted 20yrs posted by toyo22r

diode series or array?

I need a series of led's (about 7) to use as a voltage reference. I want to use led's because I need a certain tempco a...
21 comments posted 20yrs
posted by kellrobinson
21 comments posted 20yrs posted by kellrobinson

Help needed for using a decoder

Hi all, I was wondering if anyone could help with the following question. For the function, F(A, B, C, D) = (0, 2, 4, 5...
3 comments posted 20yrs
posted by strictly_mk
3 comments posted 20yrs posted by strictly_mk

Electric Universe

I'm breezing through David Bodanis's easy to read "Electric Universe", but came to something of a halt on pages 181-183...
0 comments posted 20yrs
posted by sierra_mtnview
0 comments posted 20yrs posted by sierra_mtnview

Fluke 189 AC over DC function

I got a Fluke 189 for Christmas and am wondering about this one feature, it has an option when you are in the DC volts...
1 comments posted 20yrs
posted by 1qazse4
1 comments posted 20yrs posted by 1qazse4

Interfacing to a thermocouple

I need to set my thinking straight on how to connect to a type-K thermocouple... The hot junction is straightforward. T...
4 comments posted 20yrs
posted by me
4 comments posted 20yrs posted by me

NEC Plasma P S rebuild

A friend has two large Plasma screens with burned out power supplies. He's a Broadcast Maintenance Engineer at a 24 hou...
0 comments posted 20yrs
posted by otterson
0 comments posted 20yrs posted by otterson

using decoder to receive a function with 1 out

Hi peaple, I have a logic function: F(A,B,C) = A XOR C How can I implement it using 2-to-4-line Decoder (74LS156) and NA...
5 comments posted 20yrs
posted by irenalt
5 comments posted 20yrs posted by irenalt

How frequency effects voltage

I mean why we use 50/60 Hertz in houses why we dont use 400Hertz. i know as we increase frequency losses increase but wh...
16 comments posted 20yrs
posted by usmsubhani
16 comments posted 20yrs posted by usmsubhani

White noise generator

I would be grateful for suggestions on constructing a simple random noise generator. Most of the noise should be within...
31 comments posted 20yrs
posted by dewhurst
31 comments posted 20yrs posted by dewhurst

"Why Tacho Feedback is Necessary?"

Hi, Please let me know why tacho feed back is necessary?? Without Tacho the Servo motor runs.. Help me..
5 comments posted 20yrs
posted by aniket_gokhale
5 comments posted 20yrs posted by aniket_gokhale

MOSFET transconductance

I'm trying to analyze a trivial common-source amplifier based on an IRFP9240 power P-channel MOSFET (datasheet at http:...
15 comments posted 20yrs
posted by walterh
15 comments posted 20yrs posted by walterh