Hobby Electronics Basics

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INTERFACE GSM SIM DIRECTLY TO MY PC

1) CAN SOMEONE TELL ME HOW CAN I READ MEMORY FROM GSM SIM WITHOUT USING CELL PHONE .. I MEAN I WANT TO INTERFACE GSM SI...
1 comments posted 19yrs
posted by attractivearafat
1 comments posted 19yrs posted by attractivearafat

hFE on DMM

I found out that my DMM can measure hFE for transistors, but when a correctly place a transistor in the slots the numbe...
6 comments posted 19yrs
posted by adrian.galindo
6 comments posted 19yrs posted by adrian.galindo

Unit of a capacitor is K?

Pal: I have a question regarding the unit of capacitors. I thought the units are pf, u, or f. For example, a capacitor...
3 comments posted 19yrs
posted by dingd
3 comments posted 19yrs posted by dingd

homopolar motor

http://www.spikedhumor.com/articles/90173/Homopolar_Motor.html Check out this little simple motor this guy made. Coolest...
4 comments posted 19yrs
posted by Jamesthompson2002
4 comments posted 19yrs posted by Jamesthompson2002

What Germanium PNP transistor do I use?

What Ger PNP transistors do I use for the following circuit in a radio: HF AMPLIFIER, MIXER; LF AMOPLIFIER, DRIVER and...
45 comments posted 19yrs
posted by dingd
45 comments posted 19yrs posted by dingd

Low voltage relay question

Still a newbie so please bear with me.... I have this 12VDC alarm panel that limits the siren output draw to 110mA. As...
7 comments posted 19yrs
posted by addiebspamnot
7 comments posted 19yrs posted by addiebspamnot

Simple Circuit Help- Automotive Lighting Circuit

Hi All, I'm hoping someone can help me, i have what is probably a simple problem- My car (Mitsubishi) has a dual filame...
4 comments posted 19yrs
posted by matt.olver
4 comments posted 19yrs posted by matt.olver

Does any one know what the TI sn1077op is?

I got this with an assortment that I bought from vakits.com, but they have shut their website down so I can't reference...
0 comments posted 19yrs
posted by guitchess
0 comments posted 19yrs posted by guitchess

FIR filter length

Hi all, Wondering whats the implication of increasing the filter length of a 2D FIR filter? wat are the applications of...
1 comments posted 19yrs
posted by PiaoChieh
1 comments posted 19yrs posted by PiaoChieh

N phase power filtering

Suppose you have n "equally spaced" rectified sinusodial voltage sources. If you add them up you get a smoother voltage...
0 comments posted 19yrs
posted by Bob.Jones5400
0 comments posted 19yrs posted by Bob.Jones5400

Cleaning Old Soda Off Of A Circuit Board?

Hey y'all. Been awhile since I've been here. I've missed the joint. I might be picking up an old SS Fender bass amp fro...
18 comments posted 19yrs
posted by blahbleh666
18 comments posted 19yrs posted by blahbleh666

Crimp tool for Molex terminals

Anybody know of a reasonably priced crimp tool for Molex 50079-8000 or 50079-8100 crimp terminals? The Molex tool is 63...
3 comments posted 19yrs
posted by oparr
3 comments posted 19yrs posted by oparr

TV power suply

Hello, my TV was broken, so I opened it. And I took off the speakers and the audio Amp. It appears that the amp is powe...
0 comments posted 19yrs
posted by matthieu_in_hk
0 comments posted 19yrs posted by matthieu_in_hk

Which uController to learn?

PIC is king, I'm sure. But I'd like to hear from those who are using all brands. Whichever you use, what do you like ab...
122 comments posted 19yrs
posted by incognito
122 comments posted 19yrs posted by incognito

Switch terminology?

Maybe I don't understand switch terminology, but I thought SPST means single throw (2 positions, ie. on-off) and SPDT m...
23 comments posted 19yrs
posted by not
23 comments posted 19yrs posted by not