gotta say, i love your videos and try not to miss any of them! but, have to say this: you always prove your schematics to hold water, but personally i’m a lot more interested in learning WHY they behave the way the do. why a certain oscillator oscilates? what’s really going on underneath? why that 555 circuit does what it does? anyway, you get my point. keep up the great work and i’ll keep following!
Thats ok but if you intend to put any kind of load on the output of the 741 or 328 or whatever op-amp you intend to use its not going to stand up to the draw and pull that negative charge close to ground. I like the idea though for low load op-amp activity. You could get a similar kind of current output off of a regular op-amp with negative feedback shorted to output and load balacing resistors between + and gnd rails on positive op-amp input.
Just watched the video. Thanks. I draw out my sketches in cad because my art work sucks. I have to ask about the caps. Your schematic shows 4 caps but on your breadboard, there's only 3. Can you clarify?
I am trying this circuit, with the 555, and it does provide a negative Voltage, if I don't connect the 100uf cap. Running at 10 volts, I getting -7 volts, does this seem correct? I'm sure there are losses in the circuit.
...just finished the video. EXCELLENT and useful circuit, using this great chip pair!! Do you know how much negative current this setup can provide while not falling, say, -1.5v ?
will this be enough to open a large dmos? custom built cap discharge spot welder... i ordered a large dmos to act as nc relay and drain cap bank either when user wants lower voltage weld or device is off/unplugged. ill probably breadboard it later today but any pitfalls or better aproaches other than buy another ic just for that neg rail are apreciated!
@@learnelectronics and it will be no time before your up to the 100k my good buddy!! Oh yah before I forget ya won't be getting the 100 thousand subscriptions It you keep going round beating up "bear's" or letting them beat you up... kill the crazy and you'll do fine.😜 😉 or maybe doing a video like will Farrell in that basketball 70s comedie film based in flint Michigan where he said he would fight a bear if they got a full house. It worked for him... what.cha think????
I agree 100% with you on the 555 IC timer being the most popular IC followed by the 741 op-amp!!
Dang, I just watched and you were talking about hitting 100 subs, now you’re about to hit 100k!
I just watched this video again here in Ohio, and I can't believe you only had 100 subscribers just 2 year's ago
the triple nickel!! the first ic I learned about. very useful. great video.
gotta say, i love your videos and try not to miss any of them! but, have to say this: you always prove your schematics to hold water, but personally i’m a lot more interested in learning WHY they behave the way the do. why a certain oscillator oscilates? what’s really going on underneath? why that 555 circuit does what it does? anyway, you get my point. keep up the great work and i’ll keep following!
Interesting video. Deserves more views
Thats ok but if you intend to put any kind of load on the output of the 741 or 328 or whatever op-amp you intend to use its not going to stand up to the draw and pull that negative charge close to ground. I like the idea though for low load op-amp activity. You could get a similar kind of current output off of a regular op-amp with negative feedback shorted to output and load balacing resistors between + and gnd rails on positive op-amp input.
+M Harding I agree with you, this was just an example of what can be done with a 555.
Please explain with a video, how to get more amperage from the negative voltage supply
Finally!!! I needed this! Would this work with an audio project?
Yes, no problem
Just watched the video. Thanks. I draw out my sketches in cad because my art work sucks. I have to ask about the caps. Your schematic shows 4 caps but on your breadboard, there's only 3. Can you clarify?
I am trying this circuit, with the 555, and it does provide a negative Voltage, if I don't connect the 100uf cap. Running at 10 volts, I getting -7 volts, does this seem correct? I'm sure there are losses in the circuit.
Wow this video was made when you only had 100 sub's. And now it says 53k. Nice 👌🍻
I don't understand shouldn't be +9v and -9v ? ... the 3v delta does influence the op behaviour
congrats on 100 subs well now almost 100K subs
So close!
why the voltage is going down when I connect it to 741 ap-amp ?
Nice
...just finished the video. EXCELLENT and useful circuit, using this great chip pair!! Do you know how much negative current this setup can provide while not falling, say, -1.5v ?
Can't believe iv not seen this video!!!!😱
will this be enough to open a large dmos? custom built cap discharge spot welder... i ordered a large dmos to act as nc relay and drain cap bank either when user wants lower voltage weld or device is off/unplugged. ill probably breadboard it later today but any pitfalls or better aproaches other than buy another ic just for that neg rail are apreciated!
Thank you very much for sharing all of the informative videos .
Liked ans subscribed .
Keep up the good work .
We can use the ICL7660 chip instead
no only the 555 timer IC
the voltage is going down....... what is going on
Arduino Zero is a very nice board.
Javier Palla Lorden I agree😀
Wow this video was made when you only had 100 sub's. And now it says 53k. Nice 👌🍻
7 days a week, and three years down the road....
@@learnelectronics and it will be no time before your up to the 100k my good buddy!! Oh yah before I forget ya won't be getting the 100 thousand subscriptions It you keep going round beating up "bear's" or letting them beat you up... kill the crazy and you'll do fine.😜 😉 or maybe doing a video like will Farrell in that basketball 70s comedie film based in flint Michigan where he said he would fight a bear if they got a full house. It worked for him... what.cha think????
Cant wait to see your reply. I think you're on to a good thing.. You certainty got the balls to do it......' 💪📈💯👌'🎉