Hobby Electronics Basics

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current and current consuming devices

I just had a couple of questions about current... can I device draw too much current for itself? I mean... if I hook up...
15 comments posted 18yrs
posted by panfilero
15 comments posted 18yrs posted by panfilero

microphone too hot - can I just insert a resistor?

Hey all; I've got a condenser microphone (balanced output, 48v phantom power) mounted inside my guitar. The output howe...
23 comments posted 18yrs
posted by toccata
23 comments posted 18yrs posted by toccata

LED's on a car

Hello everyone. I wanted to replace some of the lights in my car's cabin with LED's. I want to know what value resistor...
4 comments posted 18yrs
posted by jpatricks1
4 comments posted 18yrs posted by jpatricks1

Distortion In LM386 Amplifier

I have an amplifier in my workshop, for listening to tunes from my iPod, but if I turn it up louder then whisper level,...
15 comments posted 18yrs
posted by the1930s
15 comments posted 18yrs posted by the1930s

Various Forcasts for Battery Improvements

Anyone knowledgeable on energy storage technology who gives advice on investing in, say, copper, might be wondering abo...
14 comments posted 18yrs
posted by BretCahill
14 comments posted 18yrs posted by BretCahill

mosfet as switch

hi, I have two 12v batteries which I am hooking up in parallel using a mechanical switch (via the ground). I am attempt...
29 comments posted 18yrs
posted by lerameur
29 comments posted 18yrs posted by lerameur

need HD spindle motor driver

I have a number of small spindle motors salvaged from old hard drives that have only 3 connections. As far as I can tel...
1 comments posted 18yrs
posted by jbasi
1 comments posted 18yrs posted by jbasi

Photodiode amplifier

Hi, I am having trouble making the receiver part for my laser range finder, but I do have a head start (FYI, I am not a...
11 comments posted 18yrs
posted by rayxu
11 comments posted 18yrs posted by rayxu

I got this theory

I got this wild theory that when the ET spacecraft crashed at Roswell, that the US government got android technology fr...
4 comments posted 18yrs
posted by badura
4 comments posted 18yrs posted by badura

locating break in DC circuit - remotely

I have some photovoltaic panels with intermittent contacts. When I flex / press on the back of the panel the output wil...
1 comments posted 18yrs
posted by fritzo2ster
1 comments posted 18yrs posted by fritzo2ster

Servo Control Problem

Hi, Newbie question. I have made a servo control circuit and it does not work. It will be very nice if someone in this...
4 comments posted 18yrs
posted by venkatraja999
4 comments posted 18yrs posted by venkatraja999

static power switch

What is a static power switch? -- Rich
9 comments posted 18yrs
posted by r_delaney2001
9 comments posted 18yrs posted by r_delaney2001