Hobby Electronics Basics

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Piezo buzzer/transducer

Hi out there in Usenet electronics land. Was hoping to get a little help on something that should be pretty simple. I w...
2 comments posted 19yrs
posted by email
2 comments posted 19yrs posted by email

MOVs and surge suppressors

Many surge suppressors on the market (I'm only talking about the MOV type here, not the fancy induction style) have lit...
41 comments posted 19yrs
posted by grizdog
41 comments posted 19yrs posted by grizdog

PCB Heat Management

Hi, this is my first full eletronics project so this truly is a beginner question. I'm making a device that uses a PCB...
3 comments posted 19yrs
posted by onlinefuel
3 comments posted 19yrs posted by onlinefuel

Digital push-button selector switch?

Hello Friends, I'm trying to build a selector switch using momentary push-buttons to achieve the following effect: you...
14 comments posted 19yrs
posted by liberalsurfer
14 comments posted 19yrs posted by liberalsurfer

voltage regulator help!

I'm needing a voltage regulator or DC-DC converter or something similar. I'm not too much of an electrical engineer so...
6 comments posted 19yrs
posted by carsyng1979
6 comments posted 19yrs posted by carsyng1979

lab power supply

hi to all i'm an italian electronics hobbyist, i'm sorry for my bad english :( in this holiday i try to build my first...
13 comments posted 19yrs
posted by dunsscoto2
13 comments posted 19yrs posted by dunsscoto2

What does "Refurbished" mean?

Hello, Some stores, including Fry's, sell Refurbished items. In general, what does refurbished mean? Does it mean that...
4 comments posted 19yrs
posted by titani
4 comments posted 19yrs posted by titani

pulse width modulation spectrum analysis

Hi, I need some hints suggestion on calculating the spectrum of the a pulse width modulated signal. I have a 100kHz pul...
3 comments posted 19yrs
posted by krishmaniac
3 comments posted 19yrs posted by krishmaniac

Can a capacitor let DC current through?

1st question : Till now, I believed that capacitors only let AC signals through while blocking DC. But then, I saw a sc...
53 comments posted 19yrs
posted by orangepic
53 comments posted 19yrs posted by orangepic

toroidal choke

How does a toroidal choke differ from an ordinary inductor? How do I use the rating to determine what frequencies it pa...
3 comments posted 19yrs
posted by grizdog
3 comments posted 19yrs posted by grizdog

Zener questions

I have 2 questions regarding zener wattage. 1. Can I parallel two 1W zener to get a 2W zener ? 2. Can I increase the wa...
40 comments posted 19yrs
posted by allenbsf6502
40 comments posted 19yrs posted by allenbsf6502

Newbie ask for Help

I am just starting out with PC Repair studies and would really welcome help with things I need to work on computers. Wh...
4 comments posted 19yrs
posted by fmwhitehead
4 comments posted 19yrs posted by fmwhitehead

Looking for help with circuit revision

The following circuit was designed for me by John... -------------------------------------------------- So, your final...
5 comments posted 19yrs
posted by kasterborus
5 comments posted 19yrs posted by kasterborus

basics

can anybody help me by prescribing some books on basics of electronics
3 comments posted 19yrs
posted by rnithiece
3 comments posted 19yrs posted by rnithiece

And Now For Something Completely Different

Does anybody know of a schematic for an amplitude modulated amplifier? Yes, I do mean *amplifier.* Ron
4 comments posted 19yrs
posted by ryon
4 comments posted 19yrs posted by ryon