Hobby Electronics Basics

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555 problem with magneto

My old vehicle has been fitted with blinkers for the first time. As it's a 6 volt system, and I want good bright lights...
11 comments posted 20yrs
posted by jwprincic
11 comments posted 20yrs posted by jwprincic

inversion layer

what is an inversion layer? how it is caused?also what is body effect?
7 comments posted 20yrs
posted by raghujindia
7 comments posted 20yrs posted by raghujindia

LED Dimmer problem

Hi Group, My friend designed a circuit to light up an LED when a switch is pressed. The led lighted would be duplicated...
20 comments posted 20yrs
posted by allenbsf6502
20 comments posted 20yrs posted by allenbsf6502

real-time compression algorithms on fpga

Hello community, I am thinking about implementing a real-time compression scheme on an FPGA working at about 500 Mhz. F...
14 comments posted 20yrs
posted by quinn_the_esquimo
14 comments posted 20yrs posted by quinn_the_esquimo

Diode in series with light bulb

I was reading a web site that has information about light bulbs. Here is a quote relating to a question I wanted to ask...
10 comments posted 20yrs
posted by stevesemple
10 comments posted 20yrs posted by stevesemple

Real time clock basics

Hi all, How do those RTC work...do they need external battery backup or something else to maintain time?? Thanks
10 comments posted 20yrs
posted by nospam4u_jack
10 comments posted 20yrs posted by nospam4u_jack

Varistor rating

Hi all, I've two varistor....from two different PCI dialup modem. TUR 07271 and ZOV 07D241K is written over it...was is...
6 comments posted 20yrs
posted by nospam4u_jack
6 comments posted 20yrs posted by nospam4u_jack

Piezo sourcing help?

Does anyone know where I could buy a handful of piezoceramic vibration units, of the type used in mobiles/cellphones? I...
3 comments posted 20yrs
posted by kwbroughton
3 comments posted 20yrs posted by kwbroughton

¿What is the difference among capacitors?

As it is known there are different types of capacitors: *Electrolyitic *Tantalum *Ceramic But =BFwhich is the differenc...
12 comments posted 20yrs
posted by chriswilliams65
12 comments posted 20yrs posted by chriswilliams65

Buffer circuits?

All, Merry Christmas and a Happy New Year! I was looking through some sensors on Digikey. Some of the ratings are given...
3 comments posted 20yrs
posted by bigschlong
3 comments posted 20yrs posted by bigschlong

Re - High freq heating

What is high frequency heating.Can we use high frequency heating in applications of around 900 deg.c.Pls suggest me some...
1 comments posted 20yrs
posted by karthik_eeeng
1 comments posted 20yrs posted by karthik_eeeng

Home made PCBs

What's the best way to make little ones from big ones? I would like a method that takes a small kerf and produces a stra...
7 comments posted 20yrs
posted by alchemcj
7 comments posted 20yrs posted by alchemcj

Generate frequency on speakers

I have a cheap speaker and a battery. What can I use to create a steady tone, of let's say, 2500 Hz? Is there some kind...
10 comments posted 20yrs
posted by johjeffrey
10 comments posted 20yrs posted by johjeffrey

why resistor

Why the resistors are connected at the input of any transistor configurations(CB,CE,CC).What happens if the resistors a...
32 comments posted 20yrs
posted by raghujindia
32 comments posted 20yrs posted by raghujindia

Voltage polarity on transistor data sheets

Hi, I seem to get stuck on the stupidest things. I've been reading the datasheets for two transistors, the MPSA55 and t...
4 comments posted 20yrs
posted by longjohnstuartmill
4 comments posted 20yrs posted by longjohnstuartmill