Hobby Electronics Basics

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Recommendations for prototypes

--Have a circuit board all drawn up; now looking for a shop to make the prototype. Recommendations appreciated. Board i...
4 comments posted 17yrs
posted by steamer
4 comments posted 17yrs posted by steamer

design help

I'm ok with fixing and adapting circuits but not so good with design. I've come up with an electronic switch circuit bu...
356 comments posted 17yrs
posted by james
356 comments posted 17yrs posted by james

hey i thought you might want to see this

while surfing the net last night, i found a website with some pretty good information on it. heres the link http://www....
0 comments posted 17yrs
posted by longshot2485
0 comments posted 17yrs posted by longshot2485

Basic Electrical Safety Question

Hi, I am hoping any of you guys can solve my puzzle. If a person is touching the neutral line, the potential is already...
22 comments posted 17yrs
posted by luckiejacky
22 comments posted 17yrs posted by luckiejacky

push button LED light with modes

Hi, I'd like to build a LED circuit. I have a very basic knowledge of electronics, components, etc. I'd like to use a m...
17 comments posted 17yrs
posted by blakesphere
17 comments posted 17yrs posted by blakesphere

D flip-flop

why we use a D flip-flop,when we are getting the same output as the input?
5 comments posted 17yrs
posted by upasna.shukla20
5 comments posted 17yrs posted by upasna.shukla20

Where to look for datasheets?

I was looking at a pcb I removed from a dead microwave. I noticed a TI chip SN102977AN. I wondered what it is. Googling...
7 comments posted 17yrs
posted by clutch
7 comments posted 17yrs posted by clutch

? on small battery operated fluorescents

Once purchased a small flashlight with a fluorescent (6") built into the side, and a switch that let you decide which o...
47 comments posted 17yrs
posted by db5151
47 comments posted 17yrs posted by db5151

another output Z question

Hey all I'm still trying to find the output Z of a low gain JFET preamp I'm working with. I'm using an MPF102, in commo...
3 comments posted 17yrs
posted by toccata
3 comments posted 17yrs posted by toccata

Grounding between function generator and ADC

Hi all, I'm having some issues with a generated signal from an HP function generator, and I believe the problem may be...
1 comments posted 17yrs
posted by jrenfree
1 comments posted 17yrs posted by jrenfree

current sense circuit

Take a look at this circuit: http://www.analog-innovations.com/SED/CurrentSense.pdf I wanted to come up with an analyti...
8 comments posted 17yrs
posted by nospam
8 comments posted 17yrs posted by nospam

the best configuration for stripline on 10Gbps

I plane to transmit 10Gbps CML data over stripline from a SMA connector to a BGA chip. The question is whether I have t...
1 comments posted 17yrs
posted by sungjack0
1 comments posted 17yrs posted by sungjack0

output impedance of common source amplifier

Hi; How do I determine the output impedance of a common source (or other JFET) amplifier? I know that it is roughly 1/g...
4 comments posted 17yrs
posted by toccata
4 comments posted 17yrs posted by toccata

How to calibrate a volt meter?

I have a Radio Shack digital multimeter, and it seems to me that the DC volts shown for things like batteries may be re...
13 comments posted 17yrs
posted by gh424NO824SPAM
13 comments posted 17yrs posted by gh424NO824SPAM