Abonnér på EEVblog feed EEVblog
No Script, No Fear, All Opinion
Opdateret: 43 minutter 27 sekunder siden

EEVblog #1087 – UNBELIEVABLE Alesis Studio Monitor Fault!

tir, 29/05/2018 - 04:13

An unbelievable fault in Dave’s Alesis M1 Active 520USB powered studio monitor speaker.
Can you discover the culprit before Dave does?
This was supposed to be a boring trivial repair of a power LED, but it turned into something much more interesting.
Forum HERE

Teardown VIDEO

EEVblog #1086 – 5 Year Solar Power Results – Payback?

tir, 29/05/2018 - 04:10

Dave looks at the 5 year data on his 3kW home solar power system. What was the payback period? And will adding a Tesla Powerwall 2 lithium ion battery energy storage solution be worthwhile?

PVoutput data HERE

Forum HERE

Installation VIDEO
Previous Update HERE

EEVblog #1085 – Bypass Capacitors Visualised!

lør, 19/05/2018 - 06:43

An in-depth practical visualisation of how bypass capacitors work at both high and low frequencies.
Bulk decoupling capacitors vs bypass capacitors.
Capacitor placement and types are tested and the results examined.
How package inductance can have a large effect.
Loop area and what is means, it’s impact on EMC emissions, and how currents flow in ground planes is demonstrated

Links: http://web.mst.edu/~jfan/slides/Archambeault1.pdf

Forum HERE

EEVblog #1084 – Pocket Multimeter Shootout Part 2

lør, 19/05/2018 - 06:40

Some quick extra tests on the 6 of the 14 pocket multimeters from Part 1
Which meter *won’t* survive testing?
Forum HERE

EEVblog #1083 – Pocket Multimeter Shootout

lør, 19/05/2018 - 06:37

14 pocket multimeters from $8 to $65 are torn down and compared for feature set and build quality.
Ranging in price from $8 to $65, which one is the best in each price category?
Part 2 coming tomorrow.
Timestamps:
6:07 XB866 Wun Hung Lo
9:42 ANENG AN8203
15:47 $10 Shootout Summary
16:14 Uni-T UT10A
19:12 Uni-T UT120B/120C
22:41 UNI-T Shootout Summary
23:05 Jaycar QM1544
26:42 $20 Shootout Summary
27:06 Sanwa PM3
31:06 Brymen BM22 / Amprobe PM51
37:31 Kyoritsu KEW1018
42:01 Hioki 3244-50 CARD Tester
45:47 Amprobe DM78C
50:25 DER EE DE-19S
56:27 SANWA PM300
1:02:36 Conclusion

Use coupon code “pocket” for a big discount on the PM300

Forum HERE

EEVblog #1082 – What Do Compliance Logos Mean?

ons, 16/05/2018 - 02:25

What does the UL type approval compliance logo on consumer products mean?
What about TUV, ETL, GS, CCC and other marks?
Dave breaks down safety standards and compliance marks.

Forum HERE

EEVblog #1080 – Gigatron TTL RISC Kit Computer Review

fre, 04/05/2018 - 00:41

Review of the Gigatron.io TTL 8 bit retro computer kit. The processor is built entirely using TTL logic.
http://www.gigatron.io

Live 4 hours build: https://www.youtube.com/watch?v=wECZoUNd2GY

Forum HERE

EEVblog #1079 – Mailbag

søn, 29/04/2018 - 04:36

More mailbag!
Forum HERE

SPOILERS:
Brads Projects: https://bradsprojects.com/
Microelectronics Timeline Poster
http://www.engineeringminds.org/
Big Clown IoT kit: http://igg.me/at/bigclown
USB TouchPad: https://www.kickstarter.com/projects/jacoburge/touchpad-the-arduino-compatible-customisable-keybo
Fluxgate compass teardown
Oregon Scientific temperature sensor teardown
CCES-33 Calculator Kit
The crustiest multimeter teardown in history
Alcatel 565 Mbit/s PDH mux

EEVblog #1078 – World’s Thinnest Calculator Teardown!

søn, 29/04/2018 - 04:04

A look at the amazing construction techniques used in the world’s thinnest calculator by Casio
Destructive teardown on the Casio SL800 credit card calculator from 1983.
It’s more interesting than expected!

Forum HERE