Hobby Electronics Basics

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

Worth reading in Hobby Electronics Basics

A Hand Cranked MagnetoGenerator

Greetings, I'm trying to locate information on the hand crank magneto generator used in vintage phones: how they were c...
25 comments posted 21yrs
posted by aaawelder
25 comments posted 21yrs posted by aaawelder

Automotive delay relay

I would like to make an automotive delay relay circuit by 555, but by turn on/off another relay near this circuit the d...
5 comments posted 21yrs
posted by anooshe244
5 comments posted 21yrs posted by anooshe244

max capacitance of 1 cu ft box?

If I open an electrical thing (such as a monitor but perhaps anything) that was recently unplugged from a 120VAC power...
8 comments posted 21yrs
posted by do_not_e-mail_me_here
8 comments posted 21yrs posted by do_not_e-mail_me_here

Transformers

Hi, I've noticed that a transformer with, say, a voltage rating of 10 volts can sit at a considerable higher voltage th...
9 comments posted 21yrs
posted by rdavies
9 comments posted 21yrs posted by rdavies

How long can a telephone extension-cord be?

Recently, at a Radio Shack store at the telephone accessories section, I noticed that telephone extension cords were av...
24 comments posted 21yrs
posted by wylbur37nospam
24 comments posted 21yrs posted by wylbur37nospam

6 mw/660nm LED

Making the circut to power an LED is a breeze. However, LEDs are rated in Mcd(Millicandelas) and I need to get a 660nm...
4 comments posted 21yrs
posted by tb
4 comments posted 21yrs posted by tb

AC/DC Adapters

I'm trying to get an AC adapter for a sega megdrive, would it need to fit the exact specifications? (9-10V 850mA DC)Im f...
6 comments posted 21yrs
posted by firesuite
6 comments posted 21yrs posted by firesuite

how to repair using a schematic and DMM?

I would like to know how to troubleshoot circuits using a schematic (with voltages) and a DMM/VOM. Specifically I'm wor...
19 comments posted 21yrs
posted by tomtomtomtomtom
19 comments posted 21yrs posted by tomtomtomtomtom

"Semiconductor" sheath on cable?

Greetings: A friend is an electrician who works mainly on intallations at factories, etc. He has a beverage coaster mad...
2 comments posted 21yrs
posted by NoSpam
2 comments posted 21yrs posted by NoSpam

LED 120 Volt Pilot light

I have used Diodes and resistors in several places to as indicator lights to tell me if an outside light is on etc. If...
1 comments posted 21yrs
posted by Macdonald
1 comments posted 21yrs posted by Macdonald

KH-080B VHF power amplifier

Looking for a data sheet for a KH-080B VHF power amplifier This component is fitted to the Kyoto KG109 portable radios
0 comments posted 21yrs
posted by gencomm
0 comments posted 21yrs posted by gencomm

PIC16F57

Hi I am looking for help with programming 16F57 pics. I have tryied the Altronix AL1700 and made a serial adaptor for t...
1 comments posted 21yrs
posted by all.myjunkmail
1 comments posted 21yrs posted by all.myjunkmail

Need Thought on Slot Switch

Built a slot switch to feed into the soundcard. It is intended to calculate the period of a pendulum. 1) IT WORKS. but...
2 comments posted 21yrs
posted by logicon
2 comments posted 21yrs posted by logicon