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No Script, No Fear, All Opinion
Opdateret: 1 time 5 minutter siden

WTF Youtube – Not Suggesting Fran Blanche?

14 timer 10 minutter siden

Youtube isn’t suggesting Fran Blanche’s channel any more, what’s going on?
Does Youtube not suggest de-monetised content?

EEVblog #1121 – Fontus goes BANKRUPT!

tor, 13/09/2018 - 05:31

Who saw it coming?, Fontus have filed for bankruptcy!
The infamous “self-filling water bottle” that raised $340k on Indiegogo has gone bankrupt and delivered nothing.
You ‘canna beat the laws of physics Captain!

https://www.ksv.at/insolvenzfaelle/insolvenz-fontus-water-technology-gmbh-1030-wien
http://www.fontus.at/fontus-update.pdf
https://www.indiegogo.com/projects/fontus-the-self-filling-water-bottles#/

Forum HERE

EEVblog #1120 – How To Understand Polarised Light

tor, 13/09/2018 - 05:29

Gav “The Mechatronics Guy” explains circular polarised light and demonstrates his physical laser cut models to help understand this concept in his quest to make a pixel mapped polarised light camera.
How do 3D shutter glasses work?

https://tinkerings.org/

EEVBlog #1119 – Designing a 1kV Isolated Oscilloscope

fre, 07/09/2018 - 02:02

Bart Schroder from Cleverscope talks about the challenges in designing the world’s highest performance isolated oscilloscope.

Measurement demo on a 500V MOSFET H-Bridge and how to accurately probe it. Then a teardown and walk through of the design of the new CS448 1kV 4CH 200MHz 14bit isolated oscilloscope and the custom probes, power supplies and optical fibre interfaces they had to design to get this performance.

Forum HERE

EEVblog #1118 – Why Are Studio Monitors Noisy?

ons, 05/09/2018 - 02:54

Why do many powered studio monitor speakers have a low level audible background noise?
This is an issue with many big and popular brand monitors like KRK, Yamaha, JBL, Alesis and many others
Time for some investigation on the KRK Rokit 6 studio monitor speakers to track down where the noise is coming from.

NOTE: Not all monitors have this issue, many much higher end ones may not. It pays to check this first if you are going to spend decent money on studio monitors, as you may find it annoying.

EEVblog #1117 – PCB Power Plane Capacitance

man, 03/09/2018 - 07:20

Are power planes in a 4 layer PCB any good as a capacitor?
Can it work as one big bypass capacitor?
A look at an discussion on PCB layer stackups, and some measurements on 4 and 8 layer PCB power planes with different prepreg thicknesses and how well they work as a capacitor.

https://www.xilinx.com/support/documentation/application_notes/xapp623.pdf
https://www.researchgate.net/publication/242415439_High_Performance_FPGA_Bypass_Networks

Forum HERE

EEVBlog #1116 – The Capacitance Multiplier

tir, 28/08/2018 - 01:19

Circuit building block time. The capacitance multiplier and how it gives almost negligible power supply ripple compared to a voltage regulator.
Whiteboard theory and then some bench demonstrations and experiments. Plus a twist at the end that proves that the “Capacitance multiplier” is perhaps one of the most mis-named circuits of all time.

Forum HERE

EEVblog #1115 – Traps In Chips – And the 7660

fre, 17/08/2018 - 04:40

Dave looks at some traps in chips and their modes of operation. In this case the TI LM2776, a look a the classic 7660 charge pump voltage inverter, and output ripple and ways to reduce it.
Parametric searching, and a look at some interesting rail inverters.
The uSleeve

Forum HERE

EEVblog #1114 – NEW TS80 USB Soldering Iron Review

lør, 11/08/2018 - 05:49

Review of the new 18W USB-C TS80 temperature controlled portable soldering iron.
TLDR; Highly recommended, money well spent if you need a portable iron solution, but you need a QC3 battery pack.

EEVblog #1113 – Is a $5 USB Soldering Iron Useful?

tor, 09/08/2018 - 08:37

Is a $5 8W USB soldering iron actually useful?

Forum HERE

EEVblog #1112 – Vintage Computer Warehouse Diving!

tor, 09/08/2018 - 08:33

The Australian Computer Museum Societies’ warehouse has to shut down next week, so Dave goes warehouse diving.
If you know of someone willing to donate warehouse space in Sydney, please let me know.
UPDATE: Please don’t contact them with offers of small donations space, they need a HUGE space, as in hundreds of square meters. Thanks.

Be sure to subscribe to EEVblog2 in order to see some of the teardowns

Forum HERE

PART 2:

EEVblog #1111 – World’s First Microcontroller & Electronic Game

tor, 09/08/2018 - 08:30

A look at one of the world’s first handheld electronics games, the classic 1978 Parker Brother game Merlin The Electronic Wizard.
It just so happens to use the world’s first microcontroller, the 4 bit Texas Instruments TMS1000
Some history and a teardown.

Nice history of the Merlin development

Forum HERE

Using the Merlin PART2

EEVblog #1110 – Mailbag

tor, 09/08/2018 - 08:26

More than an hour of Mailbag!

Forum HERE

SPOILERS:
Sony DVO-1000MD medical device video DVD recorder teardown
8:09 Security ISA card teardown from the 1980’s
18:39 Power Grid the board game!
25:02 USB soldering iron
27:21 TI-nSpire CAS+ calculator PROTOTYPE!
35:28 DIY JBC/Hakko soldering iron controller
41:49 UV LED lamp for PCB exposure
45:10 DIY battery spot welder
51:44 10W Laser Diode circuit PCB design review
1:00:00 EL light teardown
1:02:41 IC2 rotary encoder Kickstarter

EEVblog #1109 – Spectrum Analyser Design Walk-through

tor, 09/08/2018 - 08:22

A step-by-step walk-though of a typical modern low cost 3GHz “All Digital IF” spectrum Analyser design.

Forum HERE

EEVblog #1108 – Casio CT-X700 Keyboard Teardown

tor, 02/08/2018 - 03:30

How do Casio make a full size velocity sensitive electronic keyboard for US$175?
Teardown of the CT-X700

Forum HERE

EEVblog #1107 – Shocking 4K BENQ Monitor Problem!

tor, 02/08/2018 - 03:07

Why does this 4K BENQ monitor mysteriously switch off on it’s own?
Inadvertently re-visiting an old video.
The chair strikes back!

Forum HERE

EEVblog #1106 – Pace ADS200 Soldering Station Review (JBC Killer?)

tor, 02/08/2018 - 03:03

A look at the new low cost US$220 Pace ADS200 130W cartridge tip AccuDrive Production Soldering Station
Can it beat the higher priced JBC CD-B station?

7:00 The new 130W TD200 soldering iron pencil
9:34 Teardown
14:18 First Turn On
16:10 Temperature accuracy test
18:06 Setup options
20:58 Burn proof lead test
21:42 Soldering ground plane thermal capacity test vs JBC
25:48 Tip life and iron plating
27:30 General discussion on soldering temperature
30:31 Thermal response test
33:53 Power consumption
35:29 Heater waveform measurement
37:08 Conclusion

Forum HERE

EEVblog #1105 – $100 Custom LCD Design – Part 3

tor, 02/08/2018 - 03:01

The $100 low cost custom LCD finally arrives!
Will it work as intended?

Forum HERE

Part 1: https://www.youtube.com/watch?v=ZYvxgl-9tNM
Part 2: https://www.youtube.com/watch?v=10D5jpO45Lo

EEVblog #1104 – Omicron Labs Bode 100 Teardown

tor, 02/08/2018 - 02:57

Teardown on the Omicron Labs Bode 100 Frequency Response Analyser / Vector Network Analyser

UPDATE: I completely missed the AD839 multiplier in the receiver can section near the ADC.

Forum HERE

EEVBlog #1103 – Omicron Labs Bode 100 Review & Experiments

tor, 02/08/2018 - 02:55

Review of the Omicron Labs Bode 100 50MHz Vector Network Analyser / Frequency Response Analyser and some experiments measuring bypass capacitors and characterizing a quartz crystal.

Forum HERE

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