Building an Arduino powered Nixie tube high voltage supply
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- čas přidán 25. 07. 2024
- #68 In this video I look at a more simple and basic way of making a high voltage power supply for nixie circuits without using a dedicated control IC. I base the design around an Arduino board and use some other extra components.
Final supply schematic:
drive.google.com/open?id=1FMM...
Datasheet:
ww1.microchip.com/downloads/en...
Other power supply related videos:
Nixie Tube Booster: • DIY - Nixie tube boost...
Booster ripple attenuation: • Electronics Tutorial -...
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thanks. helping me improve my own projects and come up with new ideas
Nice to hear that! Is there anything in particular that you are working on?
A sugestion: increase the duty cycle of the PWM as you drive more tubes from the Arduino. Or measure with the ADC ( + voltage divider) the output of the supply and adjust the PWM duty cycle, using a PI algorithm to improve stability.
Thank you very much Sir. You are a good teacher, can you please share a video on "How I can use LTSpice to generate SPWM using PWL(PieceWise Linear)" ..... been struggling with that lately.
Hello @Piet Matsobane ! Well if you can generate the PWL file somehow, than its not that difficult to import (see czcams.com/video/nPZ7vneN3v8/video.html ) on the other hand, you could try to generate the SPWL using the simplified technique for driving a D class amplifier ( czcams.com/video/rR69btcolFc/video.html )
Let me know if this works out!
@@FesZElectronics Oh yes I was able to easily generate SPWM using your technique here ( czcams.com/video/nPZ7vneN3v8/video.html ), THANK YOU , and after watching this ( czcams.com/video/rR69btcolFc/video.html ) I noticed that part of my circuit will also need a similar Low Pass Filter ...... the project I am working on is a Pure sine wave inverter AND I will be generating my SPWM using a microcontroller.
Very good Video :) can you may build and explain a high frequency class A amplifier for the frequencys between 400Mhz and 500Mhz or at least more than 100Mhz? I ask because Amplifier gets a bit more complicated in this area.
Hello Alex. I'm not sure when I will get to this; the main problem being that I don't really have the right equipment to correctly measure a circuit above 100MHz. Out of curiosity, why are you interested in such high frequencies (specifically 400-500MHz?)
@@FesZElectronics I always want to build high frequency circuits to learn about reflection and radiation of Electromagnetic waves but i had never succeed. my fastest Amplifier yet got 115MHz before stop amplifying but this was more of an accident and i relay can not explain where this limitation comes from. At least the transistor was rated for 300MHz (BC548B). 400-500Mhz specially because of my walkie-talkies, with an Amplifier between 433-434Mhz I could amplify the weak signal of my Hack rf an build a small 70cm Radio station for test purpose.
@@alexengineering3754 As long as you don't really want to much power and to keep things simple I would recommend a "gain block" since these are quite easy to use and have well defined gain ( www.analog.com/en/products/amplifiers/rf-amplifiers/gain-blocks.html ) depending on the model these go up to 6GHz. These are available from other manufacturers of course, and are usually found as MMIC components (Monolithic microwave integrated circuit); These are really good as wide-band amplifiers.
On the other hand if you want a specifically tuned amplifier on the 430-440 range, than a transistor circuit with filters might be better though. I recommend you check out AN11427 and AN11500 from NXP. They use the BFU520 and BFU580 which are HF transistors but also quite cheap.
@@FesZElectronics i trying at first the transistor amplifier again for educational purpose but for other projects it is surely a better idear to use a gain block. At least i know how to simulate my projects now, that saves me a lot of time :) thank you
Hi FesZ, I know this is an old video, but do you not need a mosfet driver for the gate of the NMOS? The arduino surely cannot charge up the gate of the nmos fast enough, but it seems to work, though I believe 40mA is the limit for an atmega328's IO port
Needing a gate driver depends on the application, and of course "fast enough" is a relative term. To drive an Nmos you need to first of all ensure the gate threshold voltage (a bit above is recommended though) - as long as you are using 5V supplied ports, this should do. Regarding switching speed - current limit is one thing (usually more is better) but the other is the gate capacitance of the transistor - you can have values ranging from ~50pF to 10nF - from the capacitance and current you can work out how fast the transistor will switch after the port was set on.
@@FesZElectronics Thanks FesZ!
@@FesZElectronics So it would seem that it would depend directly on the gate capacitance as to whether the mosfet can be driven correctly or not.
at 4:50 I guess you missed to add links to those two videos
I added them as cards at the top of the video, guess that doesn't work that well..
Anyway I left links in the description.