Hobby Electronics Basics

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"Furrows Cannot Be Concentric Circles or Spirals"

What idiot suggested this? And _no_ you cannot key word search to identify the moron. We're on the honor system. Bret Ca...
1 comments posted 18yrs
posted by BretCahill
1 comments posted 18yrs posted by BretCahill

On the Use of Crutch Words In Speech & Text

> >> I think this could also be accomplished by stringing a grid of wires over > >> the field, and using a trolley that...
4 comments posted 18yrs
posted by BretCahill
4 comments posted 18yrs posted by BretCahill

_New Yorker_ Article Comparing Tech IP To Art IP

Anyone see the recent _New Yorker_ article comparing tech IP where personality isn't nearly the factor as in the arts? B...
4 comments posted 18yrs
posted by BretCahill
4 comments posted 18yrs posted by BretCahill

about solar

Hai Can we generate 30W power using solar input Thank u
4 comments posted 18yrs
posted by swapnapriya2020
4 comments posted 18yrs posted by swapnapriya2020

Tube Radio Power Supply

I have an old regen radio that requires 45 volts for the B+. I was looking at plans for building a mains power supply,...
16 comments posted 18yrs
posted by the1930s
16 comments posted 18yrs posted by the1930s

Grid-Battery "Hybrid" Tractors

Supposedly if the tank is connected to the vehicle's engine, it's technically legal to bring 8 pesos/litre [$3/gallon]...
9 comments posted 18yrs
posted by BretCahill
9 comments posted 18yrs posted by BretCahill

pcb layout

Hai I have a small doubt about PCB Layout At turning point could we do route at 45 degree's , some one told in PCB manu...
15 comments posted 18yrs
posted by swapnapriya2020
15 comments posted 18yrs posted by swapnapriya2020

Looking to modify this circuit for 30Hz operation

I was given the parts to build this sine wave generator. As far as I can tell it's a Wein Bridge with the two LEDs serv...
7 comments posted 18yrs
posted by stephen
7 comments posted 18yrs posted by stephen

Auto immobilizer

Good day I wonder if anyone can help me? I am trying to make an auto immobilizer. I have a uhf key chain type transmitt...
0 comments posted 18yrs
posted by hilton_spark
0 comments posted 18yrs posted by hilton_spark

Schematic Capture and Board Layout Software

Are there any schematic capture/board layout applications available for Windows that don't cost an arm and a leg, yet a...
2 comments posted 18yrs
posted by sodaant
2 comments posted 18yrs posted by sodaant

Heathkit IO-4105 probes

Hi, Does anyone know what probes will work with the Heathkit IO-4105 scope? Its a 5mhz scope. Would 100MHZ probe work? T...
1 comments posted 18yrs
posted by Marcus123456
1 comments posted 18yrs posted by Marcus123456

EKG Electrodes

I have a few EKG electrodes, the round things that are stuck on the skin. I have some of both the kind that are used fo...
2 comments posted 18yrs
posted by none
2 comments posted 18yrs posted by none

Europe and AC

I think that the AC in Europe is 220. Can't I just wire up something from the outlet like oneside and the ground for 110...
6 comments posted 18yrs
posted by rickj
6 comments posted 18yrs posted by rickj

Solder braid: width?

I want to solder one TQFP144, but do not have any experience with anything more than DIP40. This is what I'm planning t...
10 comments posted 18yrs
posted by aleksaZR
10 comments posted 18yrs posted by aleksaZR

Speaker with a TV versus Radio

I have a RS small Optimus speaker (stereo pair). It operates on four AA batteries. I plugged the powered speaker into m...
3 comments posted 18yrs
posted by notvalid2
3 comments posted 18yrs posted by notvalid2