Hobby Electronics Basics

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Single Supply Op-Amp

Can someone recommend a single supply op-amp with better specs than an LM358? Thanks, Ken McDonald
16 comments posted 22yrs
posted by sorry.no
16 comments posted 22yrs posted by sorry.no

Plug a 240V-110V US Dryer in Europe

Hello, I have bought a Whirlpool Dryer in the US, and I have now moved to Spain. I have brought my dryer with me, think...
8 comments posted 22yrs
posted by cecile.frederic
8 comments posted 22yrs posted by cecile.frederic

RF near-field vs far-field

The lastest issue of EDN (Oct 14, 2004) has an article on RFID that includes a line that has me puzzled: "With all othe...
2 comments posted 22yrs
posted by NoSpam
2 comments posted 22yrs posted by NoSpam

The Rogowski Coil

I am trying to gain a better understanding of the principles of the Rogowski coil. I understand that an AC current carr...
5 comments posted 22yrs
posted by aaawelder
5 comments posted 22yrs posted by aaawelder

Units of 1/Farads and 1/Henries?

Just curious... the untis of the inverse of an Ohm are a Mho (cute). Is there an equivalent for the inverse of Farads a...
15 comments posted 22yrs
posted by JKolstad71HatesSpam
15 comments posted 22yrs posted by JKolstad71HatesSpam

incandescent bulb power consumption

How can a 60W bulb only draw 60W of power if it's internal resistance is 19 ohms? Or does the resistance suddenly increa...
7 comments posted 22yrs
posted by no_spam
7 comments posted 22yrs posted by no_spam

Norma; 'boot sequence' for a CPU?

I'm curious, please indulge me - what is the normal 'boot sequence' for your average old CPU? Let's take a Z80 for exam...
24 comments posted 22yrs
posted by pdmim
24 comments posted 22yrs posted by pdmim

estimating stereo cable resistance

I have a Treo 600, which includes MP3 player capability. I would like to plug it into the auxiliary jack on my car ster...
1 comments posted 22yrs
posted by jaepstein_63
1 comments posted 22yrs posted by jaepstein_63

bingo! (eventually)

Energy saving lamps: Ive finally figured out how they work. Simple really. You too may have noticed the delay in illumi...
2 comments posted 22yrs
posted by usenet
2 comments posted 22yrs posted by usenet

Switching wall-wart noise

How much noise should I expect from a 5 volt 800mA, switching, regulated wall-wart? The wall-wart is powering a PIC pro...
1 comments posted 22yrs
posted by wrongaddress
1 comments posted 22yrs posted by wrongaddress

Idle Step-Down Transformers consume electricity?

For the past six months, I have been using a cheap step-down transformer (220v to 110v) rated at 500W. Even when all th...
2 comments posted 22yrs
posted by opticreep
2 comments posted 22yrs posted by opticreep

whither regenerative amplifiers?

Is there a place in modern technique for regeneration (Q-multiplication)?
30 comments posted 22yrs
posted by alanh_27
30 comments posted 22yrs posted by alanh_27

newbie oscilliscope recommendations

Hey folks, I was reading my latest issue of Nuts & Volts (http://nutsvolts.com), and they were doing a review on the ne...
5 comments posted 22yrs
posted by no_spam
5 comments posted 22yrs posted by no_spam

Measuring amps on 9 volt battery

Using a 9 volt battery, and Radio Shack Pen Style MM. If I use one Resistor with a high value (eg. 15K), the MM shows ....
37 comments posted 22yrs
posted by tek1940
37 comments posted 22yrs posted by tek1940