Hobby Electronics Basics

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Transistor questions

1. When calculating values for a transistor I need to find the "maximum output current from the chip". If the chips out...
19 comments posted 20yrs
posted by Digitmode
19 comments posted 20yrs posted by Digitmode

Parallel wiring

Can somwonw tell me simply how to wire three bulbs in a parallel fashion. I've seen diagrams but i still don't get it....
3 comments posted 20yrs
posted by medusa569
3 comments posted 20yrs posted by medusa569

Butane soldering irons

Hi, I was just wondering if you could use lighter fluid butane in gas soldering irons or if you had to buy the ultra pu...
3 comments posted 20yrs
posted by BJnews
3 comments posted 20yrs posted by BJnews

help with resistor for 24v->12v

Hi All, I drive an old unimog with 24v electrics and would like to put some better/bigger/brighter tail lights on it. T...
4 comments posted 20yrs
posted by 5joneses
4 comments posted 20yrs posted by 5joneses

Finding an open on pcb

I have a meter that tracks down short circuits on circuit boards but I was wondering if there was something that can tr...
8 comments posted 20yrs
posted by uriahsky
8 comments posted 20yrs posted by uriahsky

Magnetic Flux

Ok, I have this arrangement: I --> ------------------------ long straight wire d --------------- | | L | | | | rectangu...
5 comments posted 20yrs
posted by meyousikmann
5 comments posted 20yrs posted by meyousikmann

Q: feedback and input impedance in a emitter follower

Hi there I have a problem with some calculations regarding feedback and input impedance on a simple one stage transisto...
66 comments posted 20yrs
posted by peterandersen
66 comments posted 20yrs posted by peterandersen

Digital comunication through powerline

Hi, I am looking for both an integrated (IC) powerline modem and an integrated comunication "error controller". I need...
9 comments posted 20yrs
posted by no.spam
9 comments posted 20yrs posted by no.spam

ceiling fan 3 way switch

I am looking for a schematic for a fan manu. "A.C. Ceiling fan". I need, but can't find on the net. Can anyone help? Fa...
15 comments posted 20yrs
posted by pmarsREMOVE
15 comments posted 20yrs posted by pmarsREMOVE

Power rope lighting with a battery

I am new to all of this...I am trying to get a 4 ft strand of rope lighting to work on a battery (alarm panel 12 volt I...
2 comments posted 20yrs
posted by darsmith
2 comments posted 20yrs posted by darsmith

How to determine a Powersupply pinout

I have an old piece of test equipment that uses a 5 pin DIN plug as the input from the powersupply. I don't have this p...
6 comments posted 20yrs
posted by uriahsky
6 comments posted 20yrs posted by uriahsky

Vl in analog switch?

Hey all; I'm working on using an analog switch (MAX4661) to replace a relay in a footswitch unit for my guitar effects....
2 comments posted 20yrs
posted by toccata
2 comments posted 20yrs posted by toccata

Oxyacetylene Ionization and EMI

Hi: An oxyacetylene flame -- due to its high temperature -- can cause nearby air molecules to ionize. Does this ionizat...
1 comments posted 20yrs
posted by glucegen1
1 comments posted 20yrs posted by glucegen1