Hobby Electronics Basics

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Cam Setup

I have a Panasonic BLC1A camera that I am trying to set up. Router is a Amped R20000G. Laptop is Win XP Pro latest upda...
0 comments posted 13yrs
posted by nospam
0 comments posted 13yrs posted by nospam

Glow bar igniter

Having trouble with my Fridgidaire oven. Sometimes is just doesn't heat up. Looked up the igniter function referenced i...
7 comments posted 13yrs
posted by perilmung
7 comments posted 13yrs posted by perilmung

USB Motion Detector & Camera

It seems like the very first thing that would appear for home security is a motion detector with a USB plug to activate...
5 comments posted 13yrs
posted by BretCahill
5 comments posted 13yrs posted by BretCahill

Lithium Batteries

Hello all, Greenbatteries.com is dedicated to providing helpful information regarding the use of rechargeable batteries...
0 comments posted 13yrs
posted by grenbatteries
0 comments posted 13yrs posted by grenbatteries

Analyzing circuits with tapped inductors

I am currently looking at the Hartley oscillator (yes I'm getting serious a bout that stuff), and I currently find it h...
12 comments posted 13yrs
posted by mhdpublic
12 comments posted 13yrs posted by mhdpublic

stepping up battery voltage

Hi. I want to step up voltage of my AA 1,5 battery to 2.5V but i need to limit the current to 500mA. Ampmeter shows tha...
13 comments posted 13yrs
posted by igor
13 comments posted 13yrs posted by igor

Soldering newbie

I am not new to soldering. I have some soldering experience. I have built a radio kit with no soldering problems whatso...
44 comments posted 13yrs
posted by mhdpublic
44 comments posted 13yrs posted by mhdpublic

Noise Suppression

Noise Suppression: My old refrigerator used to put out a lot of electrical noise on the AC line and upset my home X10 s...
1 comments posted 13yrs
posted by nospam
1 comments posted 13yrs posted by nospam

Electrons and Holes (ARRL)

This is from the ARRL handbook 2010 p5.12: "When energy is added to a semiconductor lattice, generally in the form of h...
20 comments posted 13yrs
posted by mhdpublic
20 comments posted 13yrs posted by mhdpublic

How to bootstrap

I see the term bootstrapping, used when the designer wants a high impedance and usually low capacitance. I know it invo...
29 comments posted 13yrs
posted by amdx
29 comments posted 13yrs posted by amdx

opamp voltage converter question

A simple level converter. It assumes the +4V supply can sink current, so why not just have 2 resistors between +4 and +...
6 comments posted 13yrs
posted by tomd_u1
6 comments posted 13yrs posted by tomd_u1

Speaker resistance and sound energy

I was reading the ARRL handbook (2010) and on page 4.7 there was this sentence: "it can be said that any device that di...
15 comments posted 13yrs
posted by mhdpublic
15 comments posted 13yrs posted by mhdpublic

Basic question about transistor operation

Hi everybody, could someone explain to me something very basic: the simplest transistor has 3 legs: gate, drain and sou...
4 comments posted 13yrs
posted by antontravinsky
4 comments posted 13yrs posted by antontravinsky

stepper construction

I'm interested in the idea of actually building a stepper and I'd like to know if anyone knows of companies selling hob...
32 comments posted 13yrs
posted by jonk
32 comments posted 13yrs posted by jonk