The longer I visualize simple waveforms without an DSO, The less I feel the need for ☝️ Math! And Electronics should be 75% Gym and being a kid. 25% Great Explanations Paul. Your Awesome God Bless.
I always enjoy your videos and I love how much you love this stuff. I feel the same way over the neat things we can do with them. My wife is always like "eh" whenever i try to show her something silly i set up lol.
Though I found the video interesting I was left in the dark as to how the opamp was actually creating the square wave. Your explanation of that's what and opamp does is kind of like using a word in it's own definition.
One of the electronics newb main mysteries SOLVED: how to create the stupid negative voltageeee! Just flip some cables!! I will now go slam my head into a wall until i stop feeling stupid. Maybe that would be counter productive...
@@learnelectronics thanks much! I've been watching through a lot of your videos past couple days, and I rather enjoy your presentation style. Thanks for puttin' these up!
.. and if someone wondering where it can be used.. well, almost everywhere you need square wave signal. Perfect example: www.pcsilencioso.com/cpemma/thermal.html (last schematic) I'll be using this for my next LED lamp cooling. It used comparator, but still same idea. Done on breadboard, works good even with very cheap 12v fans. (you will need fly-back diode if you plan to use other than "computer style" fans or other DC motors).
I suppose you could connect up a 4017 and make an led chaser circuit? Great wee circuit for beginners to learn the practical side of electronics!
gartmorn Indeed, you can do that. You'll probably need to adjust R and C for the desired effect. As shown here, 140Hz might be too fast.
Yes I realised that and I should have mentioned it in my reply! You could use a variable resistor to set your desired timings.
The longer I visualize simple waveforms without an DSO, The less I feel the need for ☝️
Math! And Electronics should be 75%
Gym and being a kid. 25%
Great Explanations Paul.
Your Awesome
God Bless.
I always enjoy your videos and I love how much you love this stuff. I feel the same way over the neat things we can do with them. My wife is always like "eh" whenever i try to show her something silly i set up lol.
Wives don't get it.
Though I found the video interesting I was left in the dark as to how the opamp was actually creating the square wave. Your explanation of that's what and opamp does is kind of like using a word in it's own definition.
Watch tomorrow's video for an explanation
Led blinker with R=470K and C=47uF. This pre-dates the 555 and the schmitt trigger hads the astable capability to the opamp.
why F=1/2RC here and 1/2pi*RC in the other vid?
One of the electronics newb main mysteries SOLVED: how to create the stupid negative voltageeee! Just flip some cables!! I will now go slam my head into a wall until i stop feeling stupid. Maybe that would be counter productive...
What's the difference between a setup like this vs a crystal oscillator (like those found on the Uno)?
Can I do this with just one battery? Connecting Vee to ground :)
What if i use OP 291 opamp in this configuration ?
hmm. my quad opamp doesn't have a -Vee, just a +V and GND. would the circuit be roughly the same?
Yes
@@learnelectronics thanks much! I've been watching through a lot of your videos past couple days, and I rather enjoy your presentation style. Thanks for puttin' these up!
if change the voltage divider for a potentiometer you can control the duty of the pwm in the square wave?
No, it would just change the frequency
i Love It, give me the values of resistors and capacitor used in this video, thanks
Watch today's video
.. and if someone wondering where it can be used.. well, almost everywhere you need square wave signal. Perfect example: www.pcsilencioso.com/cpemma/thermal.html (last schematic) I'll be using this for my next LED lamp cooling. It used comparator, but still same idea. Done on breadboard, works good even with very cheap 12v fans. (you will need fly-back diode if you plan to use other than "computer style" fans or other DC motors).
What would that sound like through an amplifier?(Synth)
I don't know...but I'll try it.
Awesome video! Your tutorials are sublime.
And Bob's your uncle?
Hey Paul, I sent you a quick email. I'd love to hear back from you soon!
good thing you never went into the whole cap time constant and charge/discharge rate thingy, that will probably be a 10hrs video😂😂😂😂