Hobby Electronics Basics

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Twin Tee Sine Wave Oscillator

How does a twin-tee sine wave oscillator work? The schematic I have shows an op-amp with a twin-tee between the output...
5 comments posted 21yrs
posted by slave
5 comments posted 21yrs posted by slave

Guitar signal

Seeing the guitar pickup is a magnet,it produces an A/C current.Yes? Does the Preamp input turn it into a DC current? H...
21 comments posted 21yrs
posted by j.michael
21 comments posted 21yrs posted by j.michael

PIC Question

What Assembler platform is used in programming IC's? x86?
3 comments posted 21yrs
posted by chaoscontinuum
3 comments posted 21yrs posted by chaoscontinuum

Short message

This is just a test
2 comments posted 21yrs
posted by jfields
2 comments posted 21yrs posted by jfields

Using a d cell battery to power a digital watch?

Hi, I am new to this group and have been playing around with unwanted (by others) digital watches. I have been powering...
8 comments posted 21yrs
posted by videoman
8 comments posted 21yrs posted by videoman

Remote controlled audio potentiometer (OT?)

Hello, I would like to change the manual volume potentiometer of my integrated amplifier with a motor-driven potentiome...
2 comments posted 21yrs
posted by maxy888[NOSPAM]
2 comments posted 21yrs posted by maxy888[NOSPAM]

battery rating question

If a 12 volt battery is rated at '14 amp hours', does that mean it is capable of powering a load that draws 14 amps, at...
3 comments posted 21yrs
posted by cyberhun
3 comments posted 21yrs posted by cyberhun

Order of placing SMTs?

What is the best plan for placing surface mounted compinents on a board? Should you place the bigger stuff, SOICs and D...
2 comments posted 21yrs
posted by gashmore
2 comments posted 21yrs posted by gashmore

current sources not adding up

Not sure where I'm making an assumption or math error here. I pulled a simple problem from a book but I keep getting a...
9 comments posted 21yrs
posted by rspinks1
9 comments posted 21yrs posted by rspinks1

Digital Score Board

I am trying to build a digital score board for my dads table hockey i want to have a clock in the middle that has the r...
0 comments posted 21yrs
posted by hall_hair
0 comments posted 21yrs posted by hall_hair

LM317 Charger Problem

Hey, folks, I know the topic of LM317 chargers for batteries has been beaten to death but I've got a problem that I can...
13 comments posted 21yrs
posted by hboothe
13 comments posted 21yrs posted by hboothe

Looking for advise on PC FlowMeter

Hello all, I have a Water Cooled PC, and I would like to make my own flow sensor. The reason I am wanting to do this, a...
6 comments posted 21yrs
posted by duh
6 comments posted 21yrs posted by duh

Information about touch screens needed !!!

Hello, Do you know any good web pages concerned to the touch screens technology? I need information about how do they wo...
0 comments posted 21yrs
posted by kubalka
0 comments posted 21yrs posted by kubalka

Beginner help

Hi, I recently became interested in hobby electronics but am not sure that I like it as of yet. I purchased a soldering...
4 comments posted 21yrs
posted by chaoscontinuum
4 comments posted 21yrs posted by chaoscontinuum