5V Regulator design tutorial - How it works, how to design PCB altium
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Date: 2023-11-17
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Comments and reviews: 30
Michael
Nice video--and appreciate you providing the PCB files etc. I actually built it---A couple of observations---first--I always use a heatsink on the 78xx series---and the PCB doesn't have provisions for one--Second--the files are from Altium--which are hard to convert and alter if you use a different PCB design platform. I ultimately just used the stock file you provided and sacrificed one of the caps---which didn't seem to affect noise off battery supply--Finally--I used this to power an Arduino--and thus used a 7809 because Arduino has its own VREG and requires 7-12 volts for accurate voltage stability--also--by using a 9v 78xx--you dissipate the heat across two Regs--3 volts (assuming 12v supply)on this board/reg, and another 4v across Arduino reg. If you run this with a 12v supply at 1 amp--you will find it shuts down quickly due to thermal protection. I mean these comments constructively and always appreciate you videos!
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Nice video--and appreciate you providing the PCB files etc. I actually built it---A couple of observations---first--I always use a heatsink on the 78xx series---and the PCB doesn't have provisions for one--Second--the files are from Altium--which are hard to convert and alter if you use a different PCB design platform. I ultimately just used the stock file you provided and sacrificed one of the caps---which didn't seem to affect noise off battery supply--Finally--I used this to power an Arduino--and thus used a 7809 because Arduino has its own VREG and requires 7-12 volts for accurate voltage stability--also--by using a 9v 78xx--you dissipate the heat across two Regs--3 volts (assuming 12v supply)on this board/reg, and another 4v across Arduino reg. If you run this with a 12v supply at 1 amp--you will find it shuts down quickly due to thermal protection. I mean these comments constructively and always appreciate you videos!
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Dan
Making custom PCBs has changed so much since when I was younger.
I remember being 12 years old and I had to hand draw the tracks with an etch resist pen, onto copper clad board.
Then I would etch the copper, using a spare plastic takeaway tub, filled with ferric chloride.
Finally, I'd drill the PCB with a hand operated drill and a. 8mm bit. Then I would use engine de-greasant to remove the remaining etch resist pen ink from the copper tracks.
Then the board was ready for soldering.
I didn't have the luxury of the green solder mask, or the professional white text.
It was often difficult, because I had to mentally reverse the circuit, as I was drawing the copper track layout on the bottom side of the board. Often times, I'd get it wrong.
reply
Making custom PCBs has changed so much since when I was younger.
I remember being 12 years old and I had to hand draw the tracks with an etch resist pen, onto copper clad board.
Then I would etch the copper, using a spare plastic takeaway tub, filled with ferric chloride.
Finally, I'd drill the PCB with a hand operated drill and a. 8mm bit. Then I would use engine de-greasant to remove the remaining etch resist pen ink from the copper tracks.
Then the board was ready for soldering.
I didn't have the luxury of the green solder mask, or the professional white text.
It was often difficult, because I had to mentally reverse the circuit, as I was drawing the copper track layout on the bottom side of the board. Often times, I'd get it wrong.
reply
donutsndcoffee
I remember when I was in middle school, I followed a tutorial on how to make a voltage regulator and housing everything in an altoids tin. It had the voltage regulator and just a resistor. I'm pretty sure I shorted the whole thing by either having the tin short circuit the whole thing, or I reversed the inputs. Anyways, I'm 27 now, have a degree in physics and a profession. I think this will be my first full fledged personal electronics project.
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I remember when I was in middle school, I followed a tutorial on how to make a voltage regulator and housing everything in an altoids tin. It had the voltage regulator and just a resistor. I'm pretty sure I shorted the whole thing by either having the tin short circuit the whole thing, or I reversed the inputs. Anyways, I'm 27 now, have a degree in physics and a profession. I think this will be my first full fledged personal electronics project.
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Gunter
It is wise to protect the voltage regulator against larger voltages at its output than its input by another protecting diode. This case can happen, if you switch off the input voltage and you have higher capacity electrolytics in your downstream circuit. Furthermore it is necessary to take care for input voltage and supply current in order not to exceed a power loss of more than 1 W if the voltage regulator is operated without heat sink.
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It is wise to protect the voltage regulator against larger voltages at its output than its input by another protecting diode. This case can happen, if you switch off the input voltage and you have higher capacity electrolytics in your downstream circuit. Furthermore it is necessary to take care for input voltage and supply current in order not to exceed a power loss of more than 1 W if the voltage regulator is operated without heat sink.
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Rger
I hope any professional or technician can tell me: why on blueprints or schematic phase or VCC is always connecting visually correct but when negative is connected, it shows to a one line only of negative or neutral but in PCB looks with more sense, a charge getaway into a + and continues on a - but it goes to a + of the next component, not sure if it is clear
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I hope any professional or technician can tell me: why on blueprints or schematic phase or VCC is always connecting visually correct but when negative is connected, it shows to a one line only of negative or neutral but in PCB looks with more sense, a charge getaway into a + and continues on a - but it goes to a + of the next component, not sure if it is clear
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Chris
Great videos! Especially for an electronics newbie like me. I was wondering if you could do a video on powering a ESP32 circuit board with USB. I have a breadboard module that will take USB or 9V but I want to buy the individual components so it is integrated on my circuit board. I feel like it is basically this circuit.
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Great videos! Especially for an electronics newbie like me. I was wondering if you could do a video on powering a ESP32 circuit board with USB. I have a breadboard module that will take USB or 9V but I want to buy the individual components so it is integrated on my circuit board. I feel like it is basically this circuit.
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Wilbur
Very cool, I'm looking for a setup to charge as much as possible devices from a car battery. So far I haven't found anything that has a range going both under 12v (to charge a trimmer for example) and above 12v (to charge a laptop. I think it would not be rocket science but my electrical knowledge is very limited.
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Very cool, I'm looking for a setup to charge as much as possible devices from a car battery. So far I haven't found anything that has a range going both under 12v (to charge a trimmer for example) and above 12v (to charge a laptop. I think it would not be rocket science but my electrical knowledge is very limited.
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TheeMAarts
This is one of the best videos I've ever watched. You killed many birds with one stone, by explaining different aspects in a way that makes the process seam easy, starting from components' operation, circuit design, to PCB fabrication. Lots of love for the great work you're doing.
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This is one of the best videos I've ever watched. You killed many birds with one stone, by explaining different aspects in a way that makes the process seam easy, starting from components' operation, circuit design, to PCB fabrication. Lots of love for the great work you're doing.
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Ethiopian
bro can you make video for variable power supply that can adjust max 20 amps to 0-12 volt i have make one but it get hot when i charge leade asid battery so you are the only one ho can do it clearly and perffcty
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bro can you make video for variable power supply that can adjust max 20 amps to 0-12 volt i have make one but it get hot when i charge leade asid battery so you are the only one ho can do it clearly and perffcty
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Robert
For maximum current I would give more board footprint to allow for a decent BW style heatsink on the regulator. Before 2000, the now defuct Maplin Electronics supplied boards with the mentioned BW style heatsink.
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For maximum current I would give more board footprint to allow for a decent BW style heatsink on the regulator. Before 2000, the now defuct Maplin Electronics supplied boards with the mentioned BW style heatsink.
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Alan
I need to cut 12v dc down to 5v dc to power a motor but the motor is after a dpdt relay so the polarity will be switching, would a buck regulator work or are they polarised are there any other options?
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I need to cut 12v dc down to 5v dc to power a motor but the motor is after a dpdt relay so the polarity will be switching, would a buck regulator work or are they polarised are there any other options?
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education
I'm sorry, but does anyone know the purpose of the 10uf capacitor on the output side of the regulator? I understand that the 0. 1uf's are for smoothing the signal, but can't understand the 10uf
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I'm sorry, but does anyone know the purpose of the 10uf capacitor on the output side of the regulator? I understand that the 0. 1uf's are for smoothing the signal, but can't understand the 10uf
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PoorGuy
awesome awesome awesome! Thank you for all this! GREAT explanation! best evah. I think it's the making the part, and knowing what each part does when your done etc. !
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awesome awesome awesome! Thank you for all this! GREAT explanation! best evah. I think it's the making the part, and knowing what each part does when your done etc. !
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The
Hello, i'm trying to create a 12 voltage regulator for my hand cranking generator but i do not know how to create a circuit board. Can you make a video of that please?
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Hello, i'm trying to create a 12 voltage regulator for my hand cranking generator but i do not know how to create a circuit board. Can you make a video of that please?
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Chad
Do you have any videos where your starting voltage comes from the wall? say 115/120 AC? That is without using your voltage regulator that is plugged into the wall?
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Do you have any videos where your starting voltage comes from the wall? say 115/120 AC? That is without using your voltage regulator that is plugged into the wall?
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arun
Dear gentlemen, How we choose capacitor and resistor for IC's and our schematic circuit. Please tell and explain to me or send video for that choosing components.
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Dear gentlemen, How we choose capacitor and resistor for IC's and our schematic circuit. Please tell and explain to me or send video for that choosing components.
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wow
I made this Circuit with out ceramic capacitors it works with 9v battery but it burnt when i connected to a car battery even with a heatsink can someone help me
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I made this Circuit with out ceramic capacitors it works with 9v battery but it burnt when i connected to a car battery even with a heatsink can someone help me
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kulbhushan
Nice video. How to bias USB Deta lines because from this circuit, iphone can not be charged. plz tell how to Bias USB deta lines to around 2 volts
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Nice video. How to bias USB Deta lines because from this circuit, iphone can not be charged. plz tell how to Bias USB deta lines to around 2 volts
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Tom
Cool - I am doing a reverse project - I am trying to build a 18650 discharger - so instead of supplying constant current I need to stop discharge at 3v.
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Cool - I am doing a reverse project - I am trying to build a 18650 discharger - so instead of supplying constant current I need to stop discharge at 3v.
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Privacy
Hmm. I feel like this video missed something important. Specifically, it doesn't explain how the voltage regulator actually works on the inside.
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Hmm. I feel like this video missed something important. Specifically, it doesn't explain how the voltage regulator actually works on the inside.
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Ryan
Do we need a different voltage regulator to increase the USB output amps? E. g. a 4000mAH battery at your 260mA will take 15 hours to charge fully
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Do we need a different voltage regulator to increase the USB output amps? E. g. a 4000mAH battery at your 260mA will take 15 hours to charge fully
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Toothless
glad i put this video in a favourites folder, this is exactly what i am needing to build, 5v and 10v versions with leds and switches, thanks
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glad i put this video in a favourites folder, this is exactly what i am needing to build, 5v and 10v versions with leds and switches, thanks
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KornShaDoW097
This is grewt but what about for places you don't have dc current?
Like if I want to create a power supply or adapter from ac to dc?
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This is grewt but what about for places you don't have dc current?
Like if I want to create a power supply or adapter from ac to dc?
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Omar
Should have mentioned that the voltage regulator is a linear type. Which is not good for power consumption. Recommendation is a buck converter.
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Should have mentioned that the voltage regulator is a linear type. Which is not good for power consumption. Recommendation is a buck converter.
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Farhan
why was the reading on USB tester 4. 6 V and not exactly 5. 0 V? isn't the whole point of a regulator to supply a fixed amount (5 V) voltage?
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why was the reading on USB tester 4. 6 V and not exactly 5. 0 V? isn't the whole point of a regulator to supply a fixed amount (5 V) voltage?
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Samadhi
Great video. Can this be done with surface mount components? Also, what is that parts holder you use for soldering? It looks really useful.
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Great video. Can this be done with surface mount components? Also, what is that parts holder you use for soldering? It looks really useful.
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Devs
Its lot to do with this software just to make a simple circuit what if there is a big complicated circuit u need to design. its headache
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Its lot to do with this software just to make a simple circuit what if there is a big complicated circuit u need to design. its headache
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Ken
How do you adjust lanes on the board to fit spesefic currents?
example if you need a PCB but with higth currents. Like 12Vdc - 45Amp?
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How do you adjust lanes on the board to fit spesefic currents?
example if you need a PCB but with higth currents. Like 12Vdc - 45Amp?
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Peaky_Blinder
You need to be a bit special to take all this on board.
It just gave me a headache trying to follow this excellent video.
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You need to be a bit special to take all this on board.
It just gave me a headache trying to follow this excellent video.
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Chamberlain
Anyone know how to get that add-on that is used during the schematic phase to quickly add the parts from various manufacturers?
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Anyone know how to get that add-on that is used during the schematic phase to quickly add the parts from various manufacturers?
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