Hobby Electronics Basics

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RJ45 jack pins

I just bought a couple of RJ45 jacks for my project. However when the component arrived, i realized that i don't know h...
3 comments posted 20yrs
posted by vcteo1
3 comments posted 20yrs posted by vcteo1

Using a satalite radio antenna with a GPS

Can the external antenna for a satellite radio be used with a GPS, or are the antennas tuned to specific frequencies? TI...
1 comments posted 20yrs
posted by N
1 comments posted 20yrs posted by N

Single Transistor Amplifier Circuit Help

Hi, I am working on a High school Physics project, and we are trying to set up the second circuit found at: http://www....
7 comments posted 20yrs
posted by trevormcg
7 comments posted 20yrs posted by trevormcg

A Spice simulation question

I've entered the circuit for a "warble" audio oscillator! Basically the low freq (2Hz) part frequency modulates the hig...
1 comments posted 20yrs
posted by dave
1 comments posted 20yrs posted by dave

3-State CMOS Driver

I have a74HCT125N and I'm using it to program a pic.... strangely enough though when there is no external power(VCC fro...
4 comments posted 20yrs
posted by Abstract.Dissonance
4 comments posted 20yrs posted by Abstract.Dissonance

Anybody knows all about proximity switches?

Anybody knows all about proximity switches? Please tell me some website where i can learn about them. Searches on Googl...
2 comments posted 20yrs
posted by sadiqalikm
2 comments posted 20yrs posted by sadiqalikm

problem with 6800 microprocessor ic

i want the information about the 6800 microprocessor ic if any one can help me
2 comments posted 20yrs
posted by masood_1986
2 comments posted 20yrs posted by masood_1986

counter circuit help needed

I'm looking for some help with a counting circuit. I have a schematic from an OLD Radio Shack book that drives a 7490 w...
13 comments posted 20yrs
posted by professor03
13 comments posted 20yrs posted by professor03

yet another op-amp bias question

I posted a schematic over in ABSE along with a question. The jist of it is that I have a sallen key high pass filter (i...
1 comments posted 20yrs
posted by guess
1 comments posted 20yrs posted by guess

Shutting out mains voltage frequency 50/60Hz

In this application note by ST www.st.com/stonline/books/pdf/docs/1752.pdf On page 6, section III- Measure on mains, it...
3 comments posted 20yrs
posted by vcteo1
3 comments posted 20yrs posted by vcteo1

Wire Gauge ratings

I have a question about wire gauge ratings. Why do wire gauge charts show how many amps that the wire is able to carry,...
6 comments posted 20yrs
posted by jamie
6 comments posted 20yrs posted by jamie

How to adjust the LM317T voltage regulator?

I got the LM317T from Radio Shack and I am trying to wire up an external battery pack to run an mp4 player which has an...
7 comments posted 20yrs
posted by tysonclugy
7 comments posted 20yrs posted by tysonclugy

what does GBd mean?

In the following sentence: xxx Serdes device is capable of 2.5GBd serial data rates. what does GBd mean and what is the...
1 comments posted 20yrs
posted by dy.coup
1 comments posted 20yrs posted by dy.coup

ATmega16 programmer circuit

I posted about this circuit [http://www.captain.at/electronics/atmel-programmer/atmega16-programmer.png] some months ag...
4 comments posted 20yrs
posted by goranburchevski
4 comments posted 20yrs posted by goranburchevski

HELP!!

i need to design a small signal amplifier in a voltage divider biasing, can anyone help??? pls???
4 comments posted 20yrs
posted by honey_arlet24
4 comments posted 20yrs posted by honey_arlet24