Re: DC boost converter max power ?
the power supply you are using maybe 5v regulated and will need a load on the 5v rail to provide good voltage and current on the 12v rail.
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Re: DC boost converter max power ?
I'm using 12V ATX power supply...the output is 11.4V
I put fuse for protection...Leave a comment:
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Re: DC boost converter max power ?
I'm thinking obtaining 330uH or 470uH inductor in one piece, since I'm using multiple inductors in series now, a lot flux loss down the wire, reducing efficiency a lot..Leave a comment:
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Re: DC boost converter max power ?
Nearly the same result with FR107 ...216V at RL = 7KLeave a comment:
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Re: DC boost converter max power ?
may be it will answer one of my puzzle...Leave a comment:
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Re: DC boost converter max power ?
so if the output voltage is larger than diode breakdown voltage, it will reverse backward through diode...I seeLeave a comment:
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Re: DC boost converter max power ?
1N5822 40v not good enough
FR107 1000v good up to 1000v will work for your application.Leave a comment:
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Re: DC boost converter max power ?
Diode = FR302 on frequency 921Hz, Vo = 216V and RL=7K..Leave a comment:
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Re: DC boost converter max power ?
What is the output diode you are using?Leave a comment:
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Re: DC boost converter max power ?
I got 234mV on Vo for 47uH and 150KHz....Leave a comment:
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
Hi all,
TL;DR - this laptop is driving me nuts with the oddball power-related behaviors. Appreciate any insight you can provide!
I'm experiencing a power issue on an Asus Probook P5440UF-XB74. Although I've worked with electronics and computers for decades, this is my first attempt at getting into motherboard-level component troubleshooting. Any help the community can provide is greatly appreciated!
A few weeks ago I was using the laptop (on battery power) for a Zoom meeting. The battery was running very low (long meeting) but I wasn't worried about... -
Hi all!
I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅
I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
https://www.badcaps.net/forum/troubl...-hardware-devi... -
I was working on this CNC machine today found no keyboard functioning no control relay powering on
The screen powered on and was giving an operation error but the manual was not very clear about what the error exactly was but with a little bit of troubleshooting and finding out that the control relays not powering on and no keyboard functions we narrowed down to this one switching power supply which of course does not have any indicator LED light they are on the keyboard interface/relay controller board
Found shorted diodes on main controller relays there are 3 of them that... -
I see on some schematic a diode over power transistor, and dont know is in it some trick to carry current, or what is the point?...
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