Hobby Electronics Basics

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EET Career Opportunities

Is an Associates Degree in Electronics Tech still worth anything out there? How is the job situation compared to what i...
7 comments posted 21yrs
posted by iliveinatrailerpark
7 comments posted 21yrs posted by iliveinatrailerpark

Very long battery life devices

There are battery operated radios (gas-meters, SCADA...) that are able to get many years out of a battery. I'm guessing...
4 comments posted 21yrs
posted by Michael
4 comments posted 21yrs posted by Michael

Tesla "Death Ray" not really a ray?

Hello all, I recently finished a biogrpahy of Nikola Tesla by Mary Cheney (Tesla: Man Out of Time). It's chronological...
0 comments posted 21yrs
posted by gregory.hilson
0 comments posted 21yrs posted by gregory.hilson

Serail port in winxp

I am doing a project which requires serial port to be acessed in winxp.Please help me
4 comments posted 21yrs
posted by krishnaeie_007
4 comments posted 21yrs posted by krishnaeie_007

Current Draw

Hi there, I'm working on a hobby project which requires a large amount of terminal leads coming into my project box. Fo...
6 comments posted 21yrs
posted by swaxolez
6 comments posted 21yrs posted by swaxolez

PC coard exposure

I have several PC boards that that are coated with a POSITIVE resist. I cannot afford an ultraviolet light to expose th...
2 comments posted 21yrs
posted by frankpickens
2 comments posted 21yrs posted by frankpickens

Measuring tiny unknown resistance?

Hi, Anyone know a simple way I can measure a small, unknown resistance? I am guessing it is about between 1ohm and 0.5o...
12 comments posted 21yrs
posted by kevwalsh
12 comments posted 21yrs posted by kevwalsh

Cable TV splitter and Internet connection

I use Charter Communications as my ISP. At one outlet in the house I have a CTV splitter to connect to both a TV and my...
1 comments posted 21yrs
posted by nospam
1 comments posted 21yrs posted by nospam

how to use 74hc74

anyone have a schematic how to use 74hc74... i cant make it work...tnx
1 comments posted 21yrs
posted by static123ph
1 comments posted 21yrs posted by static123ph

Bandwidth of neon xfmr

I know neon transformers are designed to operate from 60Hz. But what range of input frequencies can they handle and stil...
1 comments posted 21yrs
posted by kevt
1 comments posted 21yrs posted by kevt

Welding thermocouples

Greetings, all. I'm looking for a better way to weld thermocouples than my present car-battery-and-carbon-rod method. T...
7 comments posted 21yrs
posted by NoSpam
7 comments posted 21yrs posted by NoSpam

Calculating Tilt from Accelerometer

Hi, I'm using a ADXL311 acceleromoter as a Tilt Sensor. The equations given to calculate the tilt on the x axis or Pitc...
1 comments posted 21yrs
posted by llienossor
1 comments posted 21yrs posted by llienossor

How does a RF mixer circuit work?

I've never really understood how a mixer circuit in a typical radio receiver produces the sum and difference frequencie...
6 comments posted 21yrs
posted by wrongaddress
6 comments posted 21yrs posted by wrongaddress

component heat

I run a heater wire, 3 ohms at 13VDC, using IRFZ44 FET. On some units the FET gets hot, on others it does not. Given res...
7 comments posted 21yrs
posted by invalid
7 comments posted 21yrs posted by invalid