Hobby Electronics Basics

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differences at output on and off

hai i am using LM393 as output ON and OFF It is showing ,the output will be ON at 12.2V input voltage and the output wi...
1 comments posted 18yrs
posted by swapnapriya2020
1 comments posted 18yrs posted by swapnapriya2020

Help with USB to stereo wire makeup

I have a radio control transmitter that controls my r/c planes. I also have a Simulator program ( FMS ) that allows r/c...
5 comments posted 18yrs
posted by rich99sue
5 comments posted 18yrs posted by rich99sue

anyone used the AD5301 DAC?

Has anyone used the Analog Devices AD5301 DAC? I'm trying to use it to output a variable voltage based on an operator s...
2 comments posted 18yrs
posted by starfire151
2 comments posted 18yrs posted by starfire151

Regular resistor VS sense resistor

If a circuit just calls for something like a 1 Ohm resistor, with no other info, would it be bad to use a Current Sensi...
16 comments posted 18yrs
posted by me
16 comments posted 18yrs posted by me

Help with Scope & Function Generator Snafu

I am trying to do a simple experiment involving an ocilliscope and a function generator in the same circuit. My plane i...
5 comments posted 18yrs
posted by jalbers
5 comments posted 18yrs posted by jalbers

scam?

in the post ubove me "look here" from snipped-for-privacy@yahoo.com is this a scam?
3 comments posted 18yrs
posted by youwillfindme
3 comments posted 18yrs posted by youwillfindme

reflected laser light detector circuit

I'm trying to make a battery-operated, microcontroller-controlled, short-range, laser range-finder. It needs to be very...
7 comments posted 18yrs
posted by starfire151
7 comments posted 18yrs posted by starfire151

LM358A for high-side current sensing

I'm using an LM358A for high-side current sensing. I would like to be able to use the other OP in the so-8 package as a...
2 comments posted 18yrs
posted by spamme
2 comments posted 18yrs posted by spamme

SMPS blown up - any ideas why?

I'm in the UK on nominal 240V mains - actually about 245V I've got some computers run from 12V switch mode power suppli...
4 comments posted 18yrs
posted by devnull
4 comments posted 18yrs posted by devnull

Measuring Unloaded Q of Loop Antenna?

What is the best way to measure unloaded Q of a tuned LC circuit (AM loop Antenna) without a Q meter? I tried a scope a...
7 comments posted 18yrs
posted by wrongaddress
7 comments posted 18yrs posted by wrongaddress

self-energized synchronous rectifer circuit?

Hi all - I've been reading a little about synchronous rectifiers as used in a switching power supply. I've also seen so...
4 comments posted 18yrs
posted by starfire151
4 comments posted 18yrs posted by starfire151

Help with RC fourier series

I am looking for a fourier series to approximate the following wave form: A constant DC voltage source charging a capac...
0 comments posted 18yrs
posted by jalbers
0 comments posted 18yrs posted by jalbers

differnce between theatre and tv

i have doubt to watch the movie in theatre and tv In theatre's why all the lights r putoff, may be it will effect the e...
1 comments posted 18yrs
posted by swapnapriya2020
1 comments posted 18yrs posted by swapnapriya2020

Soldering Station

I need a new soldering station to replace one I lost during a move. This is for hobby use in microcontrollers and gener...
5 comments posted 18yrs
posted by sodaant
5 comments posted 18yrs posted by sodaant