Hobby Electronics Basics

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Can Touchlamps damage or effect speakers?

Hello. I have a small "touch lamp" - you touch it anywhere, it turns on, off, or dim. I know that it emits some minor R...
0 comments posted 21yrs
posted by xkmorgan6xx4
0 comments posted 21yrs posted by xkmorgan6xx4

Battery Specification

Hi all, I just took out a dead Panasonic lead acid battery form my UPS and trying to understand the specifications writ...
7 comments posted 21yrs
posted by nospam4u_jack
7 comments posted 21yrs posted by nospam4u_jack

vacuum pump help

i hope somebody can help me. i bought a doerr pump at a garage sale the other day. they guy tol dme it had never been u...
17 comments posted 21yrs
posted by dewdrops
17 comments posted 21yrs posted by dewdrops

remember a formula

Hi, I'm studying electrical, what's the best way to remember the P.I.R.E. wheel. Thanks.
18 comments posted 21yrs
posted by JoshTmp
18 comments posted 21yrs posted by JoshTmp

Battery charging question

--I've got a decent battery charger but like most of the ones I've seen it's designed to be attached to a car battery....
18 comments posted 21yrs
posted by steamer
18 comments posted 21yrs posted by steamer

Capacitor Identification

I needed a 47uF cap. Not Polarized. I went and bought what I thought I needed . The package says, CAP BP RDL 47uf 25v 5...
12 comments posted 21yrs
posted by Cretian
12 comments posted 21yrs posted by Cretian

Transformer question; safety

I'm trying to get a better intuitive understanding of transformers. One text I have explains that an increase of curren...
4 comments posted 21yrs
posted by cgonz
4 comments posted 21yrs posted by cgonz

a circuit to switch a relay by a alarm clock

I want to construct a circuit which switch a relay by a alarm clock. Know anyone where I can find a plan in the internet...
25 comments posted 21yrs
posted by Tommi-Vogel
25 comments posted 21yrs posted by Tommi-Vogel

battery amperes matching

If a camera draws 1 amp.,and I connect it to a battery that can supply 10A,will it do any harm to the camera ,IF the vol...
3 comments posted 21yrs
posted by hartlyuk
3 comments posted 21yrs posted by hartlyuk

PUT Oscillator?

The schematic I am studying comes from page 116 of Mims' Timer, Op Amp & Optoelectronic Circuits & Projects book. The c...
5 comments posted 21yrs
posted by slave
5 comments posted 21yrs posted by slave

MPLinker confusion

I have been gradually building a program for a PIC16F877 and debuging it as I went. All of a sudden I am getting an err...
1 comments posted 21yrs
posted by gashmore
1 comments posted 21yrs posted by gashmore

Help please choosing transmitter/reciever pair

Greetings Group, This question may be better placed on the radio group and I'll post there too. The question: I am look...
1 comments posted 21yrs
posted by etpm
1 comments posted 21yrs posted by etpm

Taping Off of The Radio?

I just soldered in parallel a couple of leads to the speaker in my clock radio so I can tape the music without worrying...
4 comments posted 21yrs
posted by notat
4 comments posted 21yrs posted by notat

Solid State Harddisk

I would like to have opinion about Solid State Harddisk. It would be great if my notebook computer is using this. thank...
7 comments posted 21yrs
posted by padmow_69
7 comments posted 21yrs posted by padmow_69