Hello guys, today I unsoldered a microchip from an old board, named LM324N. It's not a programmable chip but a switch or something like this. From what I have read the IC I have can be used to amplify voltage. I tried to wire it just like its written in the schematics but from 5V I get 3.8V 0_o
Actually, right now I need a voltage amplifier to amplify 5V of the Arduino pin to exactly 15V (or at least 12V if 15 is not possible).
For those who are familiar, please explain to me how this would be possible? If resistors are needed, soon I will have resistors varying from 10 to 1M ohms so tell me the exact resistance needed.
Thanks!
Actually, right now I need a voltage amplifier to amplify 5V of the Arduino pin to exactly 15V (or at least 12V if 15 is not possible).
For those who are familiar, please explain to me how this would be possible? If resistors are needed, soon I will have resistors varying from 10 to 1M ohms so tell me the exact resistance needed.
Thanks!
It is a quad opamp, meant to amplify analog signals.
You can use it to amply 5V to 12V with a 15V supply voltage; if you need 15V out you need like 18V supply.
You always need higher supply voltage than the output voltage.
Fig 9 in the datasheet shows what you want.
Jan
You can use it to amply 5V to 12V with a 15V supply voltage; if you need 15V out you need like 18V supply.
You always need higher supply voltage than the output voltage.
Fig 9 in the datasheet shows what you want.
Jan
Sorry to have to say this but if one does not know anything about what an opamp is, then maybe electronics engineering isn't their thing...
Just saying...
Just saying...
The current it can amplify is pretty small, signal level.
You seem to be new to this field, so spend some time on research before asking such questions.
Your question level is like asking what to do with a handkerchief...very basic level.
You seem to be new to this field, so spend some time on research before asking such questions.
Your question level is like asking what to do with a handkerchief...very basic level.
I have a drawer full of handkerchiefs and I want to use them to make amplifiers or speakers or something. So what is the answer?
What exactly are you trying to “amplify”? Trying to convert a 0/5 volt logic signal to 0/15? An amplifier chip isn’t really the right part for that job. It could be forced to do it, but it’s more difficult than it needs to be. A couple of small switching transistors would do it - assuming you have a 15 volt power supply available somewhere. That’s a must-have.
How close to 15 does it need to be, and what does it need to run/drive?
How close to 15 does it need to be, and what does it need to run/drive?
Non inverting amplifier gain set with basic voltage divider in all simplicity.
5 in 15 out you need to calculate the resistors.
keep in mind such a simple quad amplifier likely wont provide much more than 10ma of current safely
as mentioned opamp output will be 2 to 3 volt from rail so you need closer to 18 volt for power.
much easier to use npn transistor as a switch
and if you are running high current load, use transistor to turn on relay.
load is connected to relay.
https://create.arduino.cc/projecthub/SBR/switching-using-transistor-c9114a
https://www.electronics-tutorials.ws/transistor/tran_4.html
No.
It contains 4 Operational Amplifiers.
Each of them can be used to amplify voltage.
You can use only one of them if you wish, but you need to "neutralize" the unused ones to avoid unexpected problems.
WHICH schematics?
Post here the exact schematic of what you built.
What is exactly what you are trying to amplify?
What does "5V" mean?
Is it DC/Pulses/a digital signal/a control voltage/etc?
WHICH Arduino pin?
What is Arduino doing?
What does the amplified signal drive/what is it load?/what is it supposed to do?
First you explain us what the actual problem is, then we can (possibly) help you.
It does not work that way.
I guess the problem is way over your head but hey, answer the above questions an we might help.
As a side note: I hope you are not trolling us.
Johnmath, if the OP does not even know what is an op amp, and has removed it from a board, I seriously doubt his / her level of competence.
Even a small child knows what to do with a handkerchief, similarly, most people here would have dealt with or know about op amps.
https://en.wikipedia.org/wiki/Operational_amplifier
First production 1967!
So pretty basic circuit component, not obscure...
Even a small child knows what to do with a handkerchief, similarly, most people here would have dealt with or know about op amps.
https://en.wikipedia.org/wiki/Operational_amplifier
First production 1967!
So pretty basic circuit component, not obscure...
Nigella is neither, she is well versed in the art of engineering, but not in a sense that most people would understand.
If anyone is interested, I will explain if my posts have been too cryptic.
If anyone is interested, I will explain if my posts have been too cryptic.
Nobody is born knowing what opamp is.
So you just ask.
At one time in every ones life you had no clue how to wire opamp.
It was comical yes, to some
Then again if you dont know, then you dont know.
Dont worry though, they did build transcontinental communication line
all the back in 1861. And they did it without opamp.
Dont feel special because you know what opamp is.
So you just ask.
At one time in every ones life you had no clue how to wire opamp.
It was comical yes, to some
Then again if you dont know, then you dont know.
Dont worry though, they did build transcontinental communication line
all the back in 1861. And they did it without opamp.
Dont feel special because you know what opamp is.
WTH are you trying to say with all this mystery talk?
Who are you to talk in the name of "Nigella"?
Unless "Nigella" is just yourself, of course.
Or a close associate.
Is this a joke?
Are you trolling us?
Why doesn´t "Nigella" speak for him/her self?
"She" has been here long enough to read and answer posts #2 to #15
Since you are in such intimate contact with "her", can you ask "her" why?
This thread has sunk even before sailing.
Who are you to talk in the name of "Nigella"?
Unless "Nigella" is just yourself, of course.
Or a close associate.
Is this a joke?
Are you trolling us?
Why doesn´t "Nigella" speak for him/her self?
"She" has been here long enough to read and answer posts #2 to #15
Since you are in such intimate contact with "her", can you ask "her" why?
This thread has sunk even before sailing.
I gave everyone in the thread enough clues about Nigella, but nobody could be bothered to ask any sensible questions.
Well, it's quiet obvious that Nigella is a forum spammer, good enough to fool most of the people most of the time, including yourself, moderators and the members who responded to her plus the 330 people who viewed the thread and anyone who clicked on the LM324N weblink.
Nigella is just one type of spammer, there are several types and they use different methods.
Well, it's quiet obvious that Nigella is a forum spammer, good enough to fool most of the people most of the time, including yourself, moderators and the members who responded to her plus the 330 people who viewed the thread and anyone who clicked on the LM324N weblink.
Nigella is just one type of spammer, there are several types and they use different methods.
Another type of spammer is a little more obvious, they posted a spam weblink unrelated to the thread in the solid state pics forum, it was visible for a few days before that post and account was deleted. They thought the post would evade detection by hiding the weblink along with a reply to an earlier post.