Thanx for making such videos (more for not making them boring like others do). Hope to see more such videos on Cathode Ray Oscilloscope and Transducers
Thanks, we *try* to make them not boring, sometimes we're more successful than others. Sadly, we sold our Cathode Ray Oscilloscope a couple years ago and got this much smaller, much quieter Rigol. The old one was gigantic and sounded like a plane taking off when we turned it on. It was also well over fifty pounds. How times have changed...
So on the anode of the full wave rectifier can that ground be connected to rod ground outside in the dirt? Or does it have to be anode connected to cathode?
I'm not sure what you mean by "anode" of the full wave rectifier - I've only ever heard that term in relation to specific components. House wiring and electronics components use the term "ground" differently - while a house ground would be connected to a rod in the ground outside, these grounds would actually be connected to what the house line would consider "neutral" (which just brings everything back together to make a closed loop). Of course, my views are very US-centric, I'm not as confident if these comments apply to other countries.
It seems the current in your diagram flows into the anodes. In forward bias doesn't current always flows into the cathode from ground? Maybe you are using conventional not electron theory or I am mistaken.
You're exactly right, Dennis - we are using conventional current flow standards here instead of electron flow. So while the electrons are flowing 'into' the cathode, the current flows 'into' the anode. Our experience has been that once you leave device level discussions, the standard is to talk about things in regards to current flow, not electron flow. Which, honestly, made learning semiconductors stuff really confusing for me at times. Unfortunately, that's the situation we're in as electrical engineers. Hopefully that clarifies this!
Two of the diodes are on at a time, then the other two, you never have just one diode or all four diodes working at the same time. But, if you have a true AC signal, you will be switching back and forth between the two sets of diodes. I recommend checking out the written tutorial and then coming back and watching this again, hopefully that'll help!
I wonder if I'm right. When you have positive cycle the current through D2 should flow if the ground has more positive potential than "-" of the transformer. It should be right otherwise there is no current through D2 but why is that?
If you mean negative cycle where the bottom leg is negative, it's because that negative voltage reverse-biases D4. The voltage on the output (connected to the cathode) is higher than that negative voltage on that lower input (connected to the anode). Does that help?
All the diodes are the same type. What he's talking about when he says biased is what the voltage is doing with respect to the diode. For a given diode, for half the AC cycle, voltage is pushing current with the direction the diode allows and is therefore forward biased in that moment. The other half of the AC cycle, voltage is pushing current the other direction, with the diode doesn't allow and this is called reverse biased. In the diagram, image the current entering from in between d1 and d3...it's can only go in one direction through d1 and onward to what ever it's powering. The other half of the AC cycle, current enters between d2 and d4 and can only move through d4.
Hi, very useful video for my university assignment, could you give me an application of a full bridge wave rectifier and briefly explain it? Would be very appreciative :) Thanks!
Hi Will! Full wave rectifiers are actually very common, so the application list is rather large and vague. Basically any time you'd need to take an AC signal and turn it into DC. If you have a small embedded system and you want it to be powered by wall electricity and don't want to get a separate power supply for whatever reason. I took apart a kitchen appliance once (I think it was a hot chocolate maker? I don't remember, it was several years ago), and to save money, and because it didn't require any real precision, they just had a quick and dirty rectifier board in there, saving themselves probably $2-$5 per unit, which would be huge savings in the consumer market.
That was weird for me at first as well, but you can think of the ground symbol as connecting all grounded parts together. It is truly a circuit, meaning that the electricity flows in a circle. While the ground symbol may look like it's a dead end, it's not. Current can flow into AND out of ground as needed. Hopefully that helps your understanding!
Thanx for making such videos (more for not making them boring like others do).
Hope to see more such videos on Cathode Ray Oscilloscope and Transducers
Thanks, we *try* to make them not boring, sometimes we're more successful than others. Sadly, we sold our Cathode Ray Oscilloscope a couple years ago and got this much smaller, much quieter Rigol. The old one was gigantic and sounded like a plane taking off when we turned it on. It was also well over fifty pounds. How times have changed...
thank you for this videoo... it really helps me to understand what's going on and do my university task!!
Glad it helps!
Great video! A little bit slower pace would be better.
Thanks for the feedback! I've been trying to slow down in more recent videos, hopefully they're a bit easier to follow.
how do I connect a not center tap transformer to an audio amplifier that requires a positive an negative dc v?
So on the anode of the full wave rectifier can that ground be connected to rod ground outside in the dirt? Or does it have to be anode connected to cathode?
I'm not sure what you mean by "anode" of the full wave rectifier - I've only ever heard that term in relation to specific components. House wiring and electronics components use the term "ground" differently - while a house ground would be connected to a rod in the ground outside, these grounds would actually be connected to what the house line would consider "neutral" (which just brings everything back together to make a closed loop). Of course, my views are very US-centric, I'm not as confident if these comments apply to other countries.
Thanks a lot for your high quality videos and explanation.
Our pleasure, thanks for the feedback Yolanda!
It seems the current in your diagram flows into the anodes. In forward bias doesn't current always flows into the cathode from ground? Maybe you are using conventional not electron theory or I am mistaken.
You're exactly right, Dennis - we are using conventional current flow standards here instead of electron flow. So while the electrons are flowing 'into' the cathode, the current flows 'into' the anode. Our experience has been that once you leave device level discussions, the standard is to talk about things in regards to current flow, not electron flow. Which, honestly, made learning semiconductors stuff really confusing for me at times. Unfortunately, that's the situation we're in as electrical engineers. Hopefully that clarifies this!
@@CircuitBread Great, thank you!
Why PIV = V(out)+0.7V? Should it be equal to Vp(out)? Why +0.7?
Mr, can i ask, is that the pair of diodes are work on and off continuosly for the the loops cycle? I am bit confuse. Thank you
Two of the diodes are on at a time, then the other two, you never have just one diode or all four diodes working at the same time. But, if you have a true AC signal, you will be switching back and forth between the two sets of diodes. I recommend checking out the written tutorial and then coming back and watching this again, hopefully that'll help!
I wonder if I'm right. When you have positive cycle the current through D2 should flow if the ground has more positive potential than "-" of the transformer. It should be right otherwise there is no current through D2 but why is that?
What stops the current from entering D4 during negative cycle?
If you mean negative cycle where the bottom leg is negative, it's because that negative voltage reverse-biases D4. The voltage on the output (connected to the cathode) is higher than that negative voltage on that lower input (connected to the anode). Does that help?
@@CircuitBread thank you so much! I overlooked that...
Why there is 4 diodes need for a full wave rectifier? I think one forward biased and one reverse biased diodes are enough. Isn't it?
All the diodes are the same type. What he's talking about when he says biased is what the voltage is doing with respect to the diode. For a given diode, for half the AC cycle, voltage is pushing current with the direction the diode allows and is therefore forward biased in that moment. The other half of the AC cycle, voltage is pushing current the other direction, with the diode doesn't allow and this is called reverse biased.
In the diagram, image the current entering from in between d1 and d3...it's can only go in one direction through d1 and onward to what ever it's powering. The other half of the AC cycle, current enters between d2 and d4 and can only move through d4.
The main use if capacitor in full wave rectifier
Hi, very useful video for my university assignment, could you give me an application of a full bridge wave rectifier and briefly explain it? Would be very appreciative :) Thanks!
Hi Will! Full wave rectifiers are actually very common, so the application list is rather large and vague. Basically any time you'd need to take an AC signal and turn it into DC. If you have a small embedded system and you want it to be powered by wall electricity and don't want to get a separate power supply for whatever reason. I took apart a kitchen appliance once (I think it was a hot chocolate maker? I don't remember, it was several years ago), and to save money, and because it didn't require any real precision, they just had a quick and dirty rectifier board in there, saving themselves probably $2-$5 per unit, which would be huge savings in the consumer market.
Thank u 🙏
Wish you can keep going explane other chapters in electronic 📚
Thanks Sarah! I think we're finally getting back into our groove, so hopefully we'll start posting new content more regularly again.
It can be done by using two diodes instead of four diodes
I guess I don't really understand how the current enters not only "*from the load*" but *through* the ground.. I got a C+ in circuits for a reason lol
That was weird for me at first as well, but you can think of the ground symbol as connecting all grounded parts together. It is truly a circuit, meaning that the electricity flows in a circle. While the ground symbol may look like it's a dead end, it's not. Current can flow into AND out of ground as needed. Hopefully that helps your understanding!
I love your videos, I think you could talk slower and that would help me out so much XD.
Thanks for the feedback, I'm trying to be slower in my delivery though I know I still go too quick sometimes. Have a great day!
@@CircuitBread This is why I switch ON the subs ;)
Nooice
Neat
Please makeit slow I don't heard all the points you have said even I have repetidly seen it
Why so fast? Did not understand a shit