Hobby Electronics Basics

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Help: Sensor needed for very special application:

Setup: 1. A dark chamber (Hermetically closed). 2. In the chamber a circular disc is mounted on an electric motor. The...
1 comments posted 20yrs
posted by lucasjensen
1 comments posted 20yrs posted by lucasjensen

microcontroller AT89S52 programing advice

im required to make a digital clock , i made several codes using iteration for delay which give not perfect delay. So i...
3 comments posted 20yrs
posted by bromio_47
3 comments posted 20yrs posted by bromio_47

PIC internal oscillator running fast

I have several 12f629s from different purchases. I just measured the CLKOUT signal and I'm getting between 1.15 and 1.2...
6 comments posted 20yrs
posted by behr
6 comments posted 20yrs posted by behr

Veroboard- newbie question

Hi All, I am making a LED array with each row to have 7 LEDs joined + to - to + etc and the appropriate resistor on the...
7 comments posted 20yrs
posted by benaud2
7 comments posted 20yrs posted by benaud2

GAussian VS Sinc

Can someone tell me please what is the difference between a Gaussian Frequency spectrum and Sinc frequency spectrum. I...
4 comments posted 20yrs
posted by papageorgiou40
4 comments posted 20yrs posted by papageorgiou40

PIC18F1320 compiler

Hi, does anyone know where I can get a compiler that supports the PIC18F1320 microcontroller? I specifically need one t...
3 comments posted 20yrs
posted by mark
3 comments posted 20yrs posted by mark

flat CRT

Why doesn't someone make a CRT tube that is almost flat like an LCD monitor? I know the electrons would have a sharper a...
22 comments posted 20yrs
posted by bob
22 comments posted 20yrs posted by bob

Free air core coil designer program

The program MiscEl has got a new page for designing air core coils, it supports many different geometries. See more abo...
51 comments posted 20yrs
posted by henrik.k.jensen
51 comments posted 20yrs posted by henrik.k.jensen

Simulate Voip software

Looking for a way to simulate a voip ( SIP) connection on the local LAN network The purpose is to test Voip telephones a...
3 comments posted 20yrs
posted by diverse.spand
3 comments posted 20yrs posted by diverse.spand

Ripple

I have a dc power supply, that I need to know the ac ripple on the output. Can anyone help me out on how I do this test...
6 comments posted 20yrs
posted by ccchrome
6 comments posted 20yrs posted by ccchrome

debubbing procedure-help

hi i have designed and fabricated a single sided pcb and i want to know the general procedure for testing the pcb.this p...
2 comments posted 20yrs
posted by pradheep.sh
2 comments posted 20yrs posted by pradheep.sh

Improvising handset beep?

This is about communications between house and shed/workshop. Important stuff, like being called in for dinner. For som...
34 comments posted 20yrs
posted by terrypinDELETE
34 comments posted 20yrs posted by terrypinDELETE

Surface Mount Protoboards

There are some SOIC and TSSOP style SMD Protoboards at http://protoboards.theshoppe.com
0 comments posted 20yrs
posted by leiferic
0 comments posted 20yrs posted by leiferic

Bypass Resistor

What is the reason for putting a bypass resistor in a circuit that converts 3.3V to 5V and vice versa using a a bus swi...
10 comments posted 20yrs
posted by yy7d6
10 comments posted 20yrs posted by yy7d6

Need to identify leads on a 2N3568 transistor

I cannot find any info on the web for the pin identification on this TO-92 transistor. Can anyone help? Is there a way...
10 comments posted 20yrs
posted by royalmp2001
10 comments posted 20yrs posted by royalmp2001