Hobby Electronics Basics

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What's this part? A rectifier?

I'm trying to figure out the part that I have on an old switched power regulator - at a glance it looks look your stand...
2 comments posted 21yrs
posted by mjones98
2 comments posted 21yrs posted by mjones98

Ultrasonic transducers?

Anyone know of any good sources for waterproofed ultrasonic transducers (for under $20)? Tried Google, without much succ...
2 comments posted 21yrs
posted by bellis350
2 comments posted 21yrs posted by bellis350

Experimenting with the PicBasic Pro Compiler

Hi, is there anyone who can help me? I bought this book "Experimenting with the PicBasic Pro Compiler" of Les Johnson b...
6 comments posted 21yrs
posted by neoprj
6 comments posted 21yrs posted by neoprj

Need help finding small 6 volt battery & charger

I need to find a small 6 volt battery pack and charger. The size of the battery pack should be no larger than 5 AAA bat...
2 comments posted 21yrs
posted by jdoe
2 comments posted 21yrs posted by jdoe

Switching Power Supply as Battery Charger

Can I use a Switching PS for an SLA Battery Charger, with the right additional components of course. I was thinking of...
2 comments posted 21yrs
posted by Me7
2 comments posted 21yrs posted by Me7

High capacity caps for ram backup

Hi all, My electronics knowledge is pretty basic; I know enough to be dangerous. :) I have a device which uses a cap fo...
1 comments posted 21yrs
posted by rjgee
1 comments posted 21yrs posted by rjgee

Fish Caps

About a year ago I used to work for a small fire/gas detection company in the UK. Often we would play a prank by connec...
4 comments posted 21yrs
posted by abc5377
4 comments posted 21yrs posted by abc5377

Circuit & Component Check

Hi all, Following on from the "Calculating Resistors Required" thread, which went off on a tanget (cos I'd no idea what...
72 comments posted 21yrs
posted by danny
72 comments posted 21yrs posted by danny

what is 75 ohm impedence?

here what I know (or what I beleave to know): impedence is the difficult electric current encounter to pass trough a wi...
4 comments posted 21yrs
posted by nanofuc
4 comments posted 21yrs posted by nanofuc

PIC Programmer

I'm looking for a simple PIC programmer for a 16F628. I've seen lots for the 16F84, but very few for this chip. the new...
2 comments posted 21yrs
posted by hey__me
2 comments posted 21yrs posted by hey__me

NEWBIE: Designing a Simple Audio Amp

I want to design and build a very simple audio amplifier to drive my 8ohms speakers from (onboard) pc soundcard. I figu...
15 comments posted 21yrs
posted by something
15 comments posted 21yrs posted by something

battery size picture chart please

Does anyone know, where is a more complete battery size chart? http://www.bbma.co.uk/batterysizes.htm I would like to se...
2 comments posted 21yrs
posted by jdoe
2 comments posted 21yrs posted by jdoe

Dying fluorescent lamp flashes

Hello, all. I have an old compact fluorescent lamp that has served admirably for many years. I finally had to take it o...
3 comments posted 21yrs
posted by NoSpam
3 comments posted 21yrs posted by NoSpam

Which resistor to build 6V photo lithium tester?

Hello, and Happy New Year to everybody. My battery tester uses a (too weak) 10mA load for its 6V test. I'm guessing tha...
1 comments posted 21yrs
posted by smogkiller2004
1 comments posted 21yrs posted by smogkiller2004