Це відео не доступне.
Перепрошуємо.
Voltage Controlled Oscillator Using 555 Timer
Вставка
- Опубліковано 14 сер 2024
- This electronics video tutorial explains how to create a voltage controlled oscillator using the 555 Timer IC. The control voltage pin or pin 5 is used to control the frequency of the output rectangular wave. As the voltage at pin 5 increases, the output frequency decreases. You can use a voltage divider network or a potentiometer to adjust the voltage at pin 5.
LED Flasher Circuit:
• LED Flasher Circuit
RC Phase Shift Oscillator Circuit:
• RC Phase Shift Oscilla...
Wien Bridge Oscillator Circuit:
• Wien Bridge Oscillator...
Colpitts Oscillator Transistor Circuit:
• Colpitts Oscillator NP...
Hartley Oscillator Circuit:
• Hartley Oscillator Cir...
_________________________________
Single Transistor Esaki Oscillator Circuit:
• Single Transistor Esak...
Single Transistor LED Flasher Circuit:
• Single Transistor LED ...
What Is Negative Resistance?
• Negative Resistance In...
Colpitts Crystal Oscillator Circuit:
• Colpitts Crystal Oscil...
Pierce Crystal Oscillator Circuit:
• Pierce Crystal Oscilla...
__________________________________
555 Timer - Pulse Generator Circuit:
• 555 Timer IC - Low Fre...
LED Blinking Circuit Using 555 Timer:
• LED Blinking Circuit U...
60 Hz Sine Wave Generator - 555 Timer:
• 60 Hz Sine Wave Genera...
555 Timer Signal Generators:
• 555 Timer Signal Gener...
_______________________________
Final Exams and Video Playlists:
www.video-tuto...
Full-Length Videos and Worksheets:
/ collections
_______________________________
555 Timer: amzn.to/2AmXPm2
Hantek Handheld Oscilloscope: amzn.to/3hCMUHT
Resistors: amzn.to/2U2dPEp
Electrolytic Capacitors: amzn.to/3B5a4i7
Digital Multimeters: amzn.to/3i8qZHF
Disclaimer: Some of the links associated with this video may generate affiliate commissions on my behalf. As an amazon associate, I earn from qualifying purchases that you may make through such affiliate links.
Final Exams and Video Playlists: www.video-tutor.net/
Full-Length Math & Science Videos: www.patreon.com/mathsciencetutor/collections
Hello from London, another fantastic lesson, thanks for teaching all the pupils and sharing your amazing teaching. My nephews have been watching and learning from you. I'm not a student but a primary teacher. I've also started teaching my pupils on UA-cam during lockdown.
Yes, I learned so much from your lessons, I could have failed if not watched your lessons. Thanks so much, you are just God Gifted teacher.
I built a simple crystal controlled oscillator using the 555 circuit for aligning vintage radio IF stages. The square waves excite the IF transformers and they produced beautifully proportioned sine waves , good enough to do a clean sweep alignment or just the simple peak alignment tuning using a scope to monitor peak amplitude values.
Very well explained. I've just built one circuit with a 555, but with pwm control, from now on I'll try to add a freq control to it. Thank you a lot.
Buena tarde, excelente explicación y muy práctico.
I was hopping to find this... you really save me
Most helpful video for 555 ic
Thanks for sharing, I was using the 555 a little bit different, basically I normally don't use the pin 5 and only have a decoupling cap on that to ground. I didn't know that the frequencies you get out of the 555 timer this way has such a wide range.
I made myself a crude function generator using a couple 555 timers, a few transistors, some opamps and a bunch of diodes and resistors and hey presto I got myself a simple function generator, fully analog and still capable of producing a wide variety of different looking waves.
I'm even working on a little add-on so I can use it to match transistors using the function generator and my oscilloscope in the XY mode as a curve tracer, I love the analog stuff, it's more of a challenge but eventually when it all works it will keep working for a long time before it needs some TLC.
My question is what's the lowest frequency you can get with this circuit and the highest frequency when you only change the two resistors R3 and R4?
Perfect explanation
Thank you Sir!
Very, very good video on the 555 timer, just an ex job...
What is the difference between control voltage to the trigger pin?
How do you calculate the frequency when the control voltage is plugged in with the formula?
Well, all you need is to use a math methode to calculate the unknown value, once you have those known ones.
I'm not clear on if you measure Vs or simply calculate it in the table at 09:30. It seems the latter.
But R3 and R4 are in parallel with the internal 5 k ohm resistors of the 555. R3 with two of them (so in parallel with 10k), and R4 with one 5k ohm, affecting the voltage Vs.
Not that it changes anything in the video, there's still a frequency jump at the 3rd last step
(In short. Managed to delete my comment)
Good for pwm motor control also.
It means the voltage control amplifies the signal output?
If you change the capacitor into variable capacitor connected to the Trigger pin, you will have Frequency changes?
YES LIFESAVER
I have an arcade button as a kill switch on my guitar. Could this circuit be used to turm it into a rapid fire mod? The guitar itself has no voltage so I know Id have to power it with a battery.
thank u
is the circle in the downer area a - supply?
Hello, should the C1 must be electrolitic or can I use normal plastic or ceramic cap which have no polarity?
idk. i think either one tho
Hello from INDIA, how can you relate frequency out with Va? Can you justify?
Look at the formular for frequency, R4 is indirectly proportional to the frequency, and when you change the value of R4,Va value is affected,so that's how frequency relate to Va
Good tiching karte hai
Kya re, spelling toh thik karke likh ya fir mat likh
I don’t know about anyone else. I have my timer running at 2.3v input. And these octave changes are .1v. It’s only drawing .050A at startup then settles to .004A I’m trying to get a frequency
Can I achieve buck - boost converter through this?
Of course
But it's not a 50on/50off square wave right? Isn't it like a 66/33 or some weirdo in between like 66% duty cycle?
why asking so much question from @ The Organic Chemistry Tutor calculate your self please he given idea
Not a square wave and wrong values ... you can make a better circuit simply with some transistors :/