Hobby Electronics Basics

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Q1- Capaitors are open for dc frequency why.? Q2-Capacitors are short for AC analysis is generally short. why..? Q3-For...
26 comments posted 18yrs
posted by navsince1987
26 comments posted 18yrs posted by navsince1987

Old Radio Resistors

I'm currently restoring an old radio, and the resistors in it are ones I've never seen before. I need to know how to in...
5 comments posted 18yrs
posted by the1930s
5 comments posted 18yrs posted by the1930s

Multiplexing signals

I don't know if I'm going down the right path here. I'm an electronics hobbyist with no formal training. I've got an Ar...
5 comments posted 18yrs
posted by nospam.kd1s
5 comments posted 18yrs posted by nospam.kd1s

12 volt automotive fan speed controller

hi, i am after a basic type schematic to controll the speed of a 12 volt dc automotive cabin fan . seems to be a bit of...
0 comments posted 18yrs
posted by krawczuk
0 comments posted 18yrs posted by krawczuk

Newbie surppressed carrier question

Ok - so if the carrier is surppressed, just how does a receiver distinguish between stations ?
19 comments posted 18yrs
posted by el_squid_2000
19 comments posted 18yrs posted by el_squid_2000

electret microphone output

I need to do some analysis of an FM transmitter circuit that is using an electret microphone for input. Does anybody kn...
5 comments posted 18yrs
posted by thompsonk87
5 comments posted 18yrs posted by thompsonk87

12 V Lamp On 240 V

I need to operate a 12 volt AC/DC filament indicator lamp on 230/250 volt mains. I'm guessing a resistor would do the tr...
31 comments posted 18yrs
posted by the1930s
31 comments posted 18yrs posted by the1930s

characteristics impedence

hi all, can anybody plz tell how do we measure cahracteristic impedence of a cable, may it be coaxial, stp, utp or powe...
5 comments posted 18yrs
posted by mahakgarg
5 comments posted 18yrs posted by mahakgarg

Orkut Safari problems

I agree 100% installing another software just for orkut? nope. I am re directing my friends to myspace or facebooks, muc...
2 comments posted 18yrs
posted by ncroix
2 comments posted 18yrs posted by ncroix

power cable question

My laptop uses power cable that has 3 prongs and looks like cloverleaf at female end. I have misplaced the power cable...
7 comments posted 18yrs
posted by impmon
7 comments posted 18yrs posted by impmon

how to use small mic from camcorder

Hi all, I took a mono mic out of an oldish camcorder we had, and wanted to then solder it to a jack and see if it'll wo...
9 comments posted 18yrs
posted by andrew.heyn
9 comments posted 18yrs posted by andrew.heyn

Home made AC-AC power supply question

I have a device requiring 9v AC 2.5 Amp. So do I get a 240v-9v transformer from the electronics shop and put it in a ca...
44 comments posted 18yrs
posted by spamspamspamspam
44 comments posted 18yrs posted by spamspamspamspam