Let's build a voltage multiplier!
Added 2023-01-31 18:30:46 +0000 UTCIn this video, I explain the operation of a Dickson charge pump, which is a simple and clever way to double (or otherwise multiply) a voltage. Charge pumps like this are typically used in low-power systems (like computers) when one part of the circuitry uses different voltage levels from another.
For example, maybe you have a processor that uses a single 5-volt supply, but you need to communicate using a protocol like RS-232 which uses ±10–15 volt signaling. How do you get 10–15 volts from a 5-volt supply? Use a charge pump!
As always, let me know if you see any issues with the video before it goes live. And thanks for your support!
-Ben
Comments
If you are going to be doing RS-485, you should demonstrate controlling a DMX-512 device!
Ben Kirkbride
2023-02-20 19:39:22 +0000 UTCAlways look forward to your videos. You have such a great way of teaching. Keep up the good work and know your videos are awesome.
Jeff Jones
2023-02-02 16:50:55 +0000 UTCPlease use your right hand, not your left hand, for high voltage testing. That way it cannot cross your heart on the way to the floor. This Electrician's guideline that would be appreciated if you were to impart it in your wonderful vid. Thank you.
Don Prefontaine
2023-02-01 14:01:12 +0000 UTCExcellent video - thank you. One minor observation: the circuit symbol you use for the 2N7000 MOSFET that you introduce at 11:43 is incorrect...that is the circuit symbol for a JFET and not for a MOSFET.
Eamonn
2023-02-01 11:49:57 +0000 UTCVery nice job.
Joseph Holley
2023-02-01 09:07:45 +0000 UTC"High voltage represents the potential to move a lot of energy" POTENTIAL. I feel like a have such a feeble understanding of basic physics at times -_-" Love how when I discovered your videos, all the electronics concepts I've learnt so far started to cement with ACTUAL solid understanding of terms. Great video as always!
Andrei Baciu
2023-02-01 09:06:23 +0000 UTCHow is the available amperage/wattage affected along the chain? Is it exclusively dependent on the last capacitor? Do the battery and all the other capacitors only affect the speed with which the next capacitor charges, but not the power? I'm thinking there might not be conservation of watts, like a transformer would have, but a conservation of joules, taking into account the capacity and charge/discharge speed of the last node?
Artem Kreimer
2023-02-01 08:10:11 +0000 UTCTry bigger capacitor at the final stage 😈
Jurģis Brigmanis
2023-01-31 22:04:05 +0000 UTCWhen you mention charge pump I thought of MAX232…
Thomas Eriksen
2023-01-31 20:52:16 +0000 UTCyou left out my name! dont worry though, an excellent video as always! i always wondered how those worked.
Caroline Mathieson
2023-01-31 20:30:43 +0000 UTCHigh voltage trippers were used in crt based TVs and monitors.
Robert Brown
2023-01-31 19:13:08 +0000 UTCAwesome topic! Small correction at 12:26: You are connecting drain with the 1k resistor to 9v, not 5v. 🤓
TheWebMachine
2023-01-31 19:04:39 +0000 UTCI'm so excited to see this video! I hope you continue doing more common circuits like this!!
Kyle
2023-01-31 18:57:44 +0000 UTCI feel like I'm learning all the fun stuff I missed out on by skipping a computer science degree and heading straight into industry, thank you (at the time I wanted to be a web developer and it was the year 2000 and the internet was moving way way quicker than the education system. With hindsight it was the correct choice)
Tyre Reviews
2023-01-31 18:35:23 +0000 UTC
