Thank you your comprehensive video tutorial on how charge pumps and boost converters work, and the disadvantages of each type of DC-DC voltage boost cct. You have covered numerous important considerations in circuit design. Great job!
Really enjoyed this video in which you show your evolution in implementing V-boosts. Dealing with power systems (solar) has intrigued me with using boost circuits to draw more power from my small solar array. Ignoring the subtleties of charging modes, a low battery can actually double the current flow, balancing out the power flow for changes in irradiance, as well as a few other tricks can cause a meaningful boost to the energy captured. Inductors are simpler than capacitors and less prone to failure.....they are great storage devices.
thanks dude. this was the video i needed on charge pumps. your initial demonstration at the beginning was just the right thing to show for this to make sense.
On diagram 3:00 technically you could getaway with polarized capacitors, but if the load is low impedance or a short, they can be exposed to alternate current. Unless there's an extra diode
Hey thanks a lot for this video,i've looked online for some useful charge pump circuits and came across some of the ones you showed, but the last one is by far the most practical one, despite it not being able to deliver much current.
This was great man. I am working on a charge pump system to bias photodetectors, and when i was plugging a load, the voltage was dropping drastically, but now i know why and how to fix it. Thank you.
Wow, I mean Great 👍. Finally someone speaking in favour of voltage multipliers. I have used them to create negative rail voltage for operational amplifiers
It seems counterintuitive to be able to boost voltage. Maybe it is a bit like increasing the PSI of the flow of water by changing the diameter of a pipe. In any case, thanks for making another great video.
The step by step explanation of the Dickson pump is brilliant, it shows very clearly how the capacitors sort of "bucket brigade" their charge along the circuit
Because it divides the DC voltage in half. Notice that the first circuit uses 10V to achieve the +5V/-5V AC wave in order to work, whereas the second circuit only needs 5V. The second circuit avoids using AC, it just uses a 5V "clock" to produce pulsed DC.
Better is to multiply ac than us for DC. To multiply DC you need more clocks means more connection of voltage. Depends upon where we need multiplication.
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Thank you your comprehensive video tutorial on how charge pumps and boost converters work, and the disadvantages of each type of DC-DC voltage boost cct. You have covered numerous important considerations in circuit design. Great job!
Thank you for watching! :)
chatgpt comment
Really enjoyed this video in which you show your evolution in implementing V-boosts.
Dealing with power systems (solar) has intrigued me with using boost circuits to draw more power from my small solar array. Ignoring the subtleties of charging modes, a low battery can actually double the current flow, balancing out the power flow for changes in irradiance, as well as a few other tricks can cause a meaningful boost to the energy captured. Inductors are simpler than capacitors and less prone to failure.....they are great storage devices.
thanks dude. this was the video i needed on charge pumps. your initial demonstration at the beginning was just the right thing to show for this to make sense.
On diagram 3:00 technically you could getaway with polarized capacitors, but if the load is low impedance or a short, they can be exposed to alternate current. Unless there's an extra diode
Hey thanks a lot for this video,i've looked online for some useful charge pump circuits and came across some of the ones you showed, but the last one is by far the most practical one, despite it not being able to deliver much current.
I agree, just keep the current to a minimum. :)
This was great man. I am working on a charge pump system to bias photodetectors, and when i was plugging a load, the voltage was dropping drastically, but now i know why and how to fix it. Thank you.
I am so glad I found this channel! Great explanation! You have a gift for making complicated topics simple to understand.
Thank you! It's good to hear that my videos are helpful. :)
Wow, I mean Great 👍. Finally someone speaking in favour of voltage multipliers.
I have used them to create negative rail voltage for operational amplifiers
That’s exactly what I needed for a project I just built that is very low amps but needs 12 volts
It's the perfect circuit for that situation! :)
It seems counterintuitive to be able to boost voltage. Maybe it is a bit like increasing the PSI of the flow of water by changing the diameter of a pipe. In any case, thanks for making another great video.
Not really though because when you make the pipe thinner the thick part gets the higher pressure
Its exactly that, PSI = voltage, Flow = Power (W)
Thanks for the info!
5:41 No, that is 20v out with ideal diodes, not 15v. The third cap = 15v with CLK low 6:21; then when CLK goes high add 5v = 20v out.
No, the last capacitor acts as a smoothing capacitor since it is tied to ground, it is not in series with the output as the previous capacitors are.
GREAT Help! Learn something new.. inventor with two patents and on to the third! Thanks.. Roland
Could you please tell me what component model specs you used? Like the type of capacitors,diode. And what is the max current that can generate?
How’s it differ from ICs like MAX1044 or LT1054? They don’t fluctuate the same way?
The step by step explanation of the Dickson pump is brilliant, it shows very clearly how the capacitors sort of "bucket brigade" their charge along the circuit
Could chage pumps be used as a circuit to verify if voltage transducers are reading voltage correctly? 300VDC transducer.
I used charge pump for my class A power amp i had built years ago... To boost the voltage for pre amp part..
How much current available this circuit?
So we need sine wave to make it work
5:17 Why is it "better" to avoid virtual grounds and intermediate AC signals?
Because it divides the DC voltage in half. Notice that the first circuit uses 10V to achieve the +5V/-5V AC wave in order to work, whereas the second circuit only needs 5V. The second circuit avoids using AC, it just uses a 5V "clock" to produce pulsed DC.
1:32 "The voltage drop in the loudest place across it." What?
And Then there are the charge pump, that make use of mos switches to make 5V to +/÷ 10V in the Maxim patent, used in the MAX232
Better is to multiply ac than us for DC. To multiply DC you need more clocks means more connection of voltage. Depends upon where we need multiplication.
Great Video☝️
Thank you :)
Impractical, unless that is you have a functionally limitless supply of 350v 130,000uf electrolytic capacitors.
I have like at least 2000 different capacitors of different sizes in my kit
OK. Nice!. But you definitely have to improve your diction, because is very poor.
7:52 Why "a couple hundred milliamps"? Why not more?