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Staigen
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Posts posted by Staigen
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Hi there Renero, velcome to Electronics Lab! :)
Can you tell us more what you mean?
If you mean a universal IC tester, that can test all types of IC:s I belive it is not possible. :( There are so many types of IC:s, digital and analog amongst others.
But if you mean a simple tester for 741:s and their clones it is simple, just make an oscillator with a low frequency, and let the output feed a pair of leds. :)
//Staigen -
I like to wish you all a Happy New Year ! :)
//Staigen -
As title says, but i can borrow one from a friend, soon.
//Staigen -
Happy Birthday Ante(Anders)!!
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Hi faraz nazir, welcome to this forum, nice to have you here ;D
can u plz explain me the use of LT, RBI RBO
LT=Lamp Test, RBI=Ripple Blanking Input, RBO=Ripple Blanking Output
Have you read the datasheet for 74LS47? A link is here:
http://www.ee.washington.edu/stores/DataSheets/74ls/74ls47.pdf
If you read the datasheet carefully you can surely figure it out!
If you cant, then tell us!
//Staigen -
Hi
Then you should get an adequate ammeter, or at least shunt.
It is usally the shunt that will broke.
//Staigen -
Hi gogo2520
Sorry to inform you that you are wrong at a few of your values ???mju 1, 250 = 1 micro Farads, 250 volts
100nF=0.1uF, the voltage is rightmju 33, 100 = 33micro Farads, 100 volts
330nF=0.33uF
//Staigen -
Hi Zeppelin
I use u instead of mju here: -
Hi balong, thats good! If everybody did this, this board would be much better!
If you look just under the window you type in, you see the text "Additional Options..." , just click
on that one and follow the instructions, its obvius what to do! Allowed file types: txt, jpg, gif, pdf,
mpg, png, zip, rar! Maximum attachment size allowed: 10000 Kb
//Staigen -
Hi ryanleung
Maybee you should switch to FM instead, and at the same time have it pulsed at a somewhat higher current. A schematic would be fine.
//Staigen -
Hi Audioguru
Hehe, a switch always have at least 2 contacts(connections), else it can not perform its task! ;D ;D
But i belive you mean poles(contacts) :) :D ;D
//Staigen -
Hi helio905
This, i belive, you have to explain a little bit, and a little schematic would be nice too
Staigen -
And a relay will complicate things, and a linear regulator will waste power. But,
a swiched regulator will be just fine, but will complicate things too.
Staigen -
Hey, those last five words wasn't there before!
//Staigen -
Me too, but why dont he write that then, and why a big solenoid, a little relay
would be a better choice!
Staigen -
Hi
But the siliniode will use power
A silly question, what is a siliniode? Do you mean a silicone diode?
//Staigen -
Hi Bobbywolf, welcome to this forum, nice to have you here! ;D
No no, this is not the way you should do it, the shunt is still connected, and can get damaged! Instead you should connect your currentfeeding wires for your winch to the battery directly. You wont get a correct reading on your meter when you use your winch, but do you need to have that? It is the same with your starter too! It will be correct in all other instances.
//Staigen -
Hi
A few more questions, what range do you need? Will IR suffice, or do you need radio? Simplex or duplex? Modules or homebrew?
//Staigen -
Hi frt
What do you mean? Why dont you read some tutorials about electronics, then
you will know how a cap looks like, hopefully!
//Staigen -
Hi Logan, hangover today? :D ;D ;D
a flash drive, a 40G hard drive, an mp3, a digital multitester are on top of my wishlist
Just curious, did you got anything of your wishes yesterday?
Was it a nice party?
//Staigen -
Hi
Its okay, but it is sometimes very hard to read what you write, english is not my
native language, i live in sweden. BTW, where do you live, i see that you are a
very skilled electronics engineer, ooh, i see that you live in Las Vegas. You say
that you have a dictionary, but you are living in USA, and your native language
is then english. I'm sorry, i could never have guessed that you lived there,
according to how you spell.
//Staigen -
Hi Tony
What do you mean? Please, at least read what you have written before you hit
the "post" button. I usally hit the preview first, and read my writing carefully and
make changes and try to correct typos before posting. I also have an
english/swedish/english dictionary handy, if there is any word i dont know.
//Staigen -
Hi abt4s, and velcome to this foum. ;D
Its not that simple, we need a little more information. Frequency range?
Data speed? RS232? Network? The more information you can supply, the
easier to recomend.
//Staigen -
Hi
when i build a cirquit i dont try to run the pieces at their maximum ratings or
more, they usally break then, sooner or later. Also, when it comes to regulators
like 78xx, i use bigger than normal electrolytics to avoid noise in the output.
I remember a calculator i once repaired, it was around 1986 or so, a friend claimed
that it have never been reliable, and now it did not work at all. I opened it up, and
found that the regulator was broken, i also found that it was not bolted to the heat-
sink, the bolt and nut was missing. I put in a new regulator and bolted it to the heat-
sink, and it worked as it should after that.
//Staigen
Solid state...transistor amp design problems
in Electronic Projects Design/Ideas
Posted
Hi there SILVERsound, and welcome to Electronics Lab :)
How did you calculate the resistors? I belive they are totaly wrong, with maybe hte exeption of the colector resistors! ??? What are the amp used for? A guitar preamp? Have you measured the voltages on the transistors, I belive they are badly saturated.
Oops, i belive I am tired, i did not saw that it is a guitar preamp!
//Staigen