Are cores intended for chokes different from those for inverter transformers ?
Barry Wilkins
Barry Wilkins
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Design of CCFL Backlight Inverters with Frame & Bar Cores
Summary
Portable devices, such as notebook computers and personal digital assistants are developed rapidly nowadays, which places an increasing demand on display technology. The LCD with cold cathode fluorescent back lighting satisfies the requirements on display performance, size and efficiency.
The backlight inverter plays a crucial role in supplying the power to the lamps of these flat-panel displays.
The frame and bar ferrite cores, described in this brochure, are especially designed...10-07-2024, 04:26 AM -
Hello to everybody!
I am asking some experienced members opinion on the following problem.The NUC was working fine until new win 10 install and while doing some updates just freeze restarting on bios splash screen.At first I thought is a corrupted bios,took a dump with ch 341,and asked for help on winraid forum,got the bin cleaned...etc and rewritten on the chip,same situation,freeze booting at splash screen.Trying to install ubuntu server failed also but,freezing when ubuntu said "bringing all cores up" something like that...That got me thinking might be something wrong with the... -
Hi there,
Recently I bought broken Bowers & Wilkins PX7 S2, the problem with them is that battery discharges on its own even with headphones turned off. It is a quite common issue with this model and even with model higher PX8.
With help of thermal camera I found out that there is one IC that is hot even with headphones turned off. To check if I'm correct I bought another PX7 S2 working one and replaced small charging board with this IC and problem solved, battery no more drains on its own. After changing board back to original problem returned so I'm 100% sure problem...05-30-2025, 01:11 PM -
BIG cores like 2080ti or 3080 cannot fit into any of my reballing holders. its for max 45mm chip and this chip have 50mm
what holders do u use for this big chip -
This is a long shot but does anyone have a photo of the USB Charge board wiring? I have a pair here that somebody has used a blowlamp to get the port off, Luckily the tracks are all good but some of the NC and filter cables were desoldered. A new port is fitted but there isn't a sniff of any marking on either side of the headphones as to the cables use. Here's hoping
Cheers
Simon11-09-2024, 07:46 AM
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