Category Archives: Miscellaneous

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

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: https://pvoutput.org/list.jsp?userid=22501

Installation: https://www.youtube.com/watch?v=VGENVguQQmo
Previous Update: https://www.youtube.com/watch?v=dEqlOj6_m0Q

Forum: <a href="http://www.eevblog.com/forum/blog/eevblog-1086-5-year-solar-power-payback/" Continue reading EEVblog #1086 – 5 Year Solar Power Results – Payback?

EEVblog #1085 – Bypass Capacitors Visualised!

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 Continue reading EEVblog #1085 – Bypass Capacitors Visualised!

EEVblog #1084 – Pocket Multimeter Shootout Part 2

Some quick extra tests on the 6 of the 14 pocket multimeters from Part 1 : https://www.youtube.com/watch?v=LCFEonQDkQU
Which meter *won’t* survive testing?
Forum: http://www.eevblog.com/forum/blog/eevblog-1083-pocket-mutimeter-shootout/

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EEVblog #1083 – Pocket Multimeter Shootout

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?
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 Continue reading EEVblog #1083 – Pocket Multimeter Shootout

EEVblog #1082 – What is the UL logo on products?

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

Previous video on the CE & FCC mark: https://www.youtube.com/watch?v=f0uvS80YIGU

Forum: http://www.eevblog.com/forum/blog/eevblog-1082-what-is-the-ul-logo-on-products/

Underwriters Laboratory UL Standard catalog: https://standardscatalog.ul.com/
ETL mark: Continue reading EEVblog #1082 – What is the UL logo on products?

EEVblog #1081 – Are Bypass Capacitors REALLY needed?

Can a product work without ANY bypass capacitors?
Dave has some fun finding out if “Muntzing” the Gigatron TTL computer works, i.e. removing all the bypass capacitors.
Lots of interesting talk on bypassing, grounding, probing, signal integrity, ground loops, loop area, noise and crosstalk.
TLDR; Don’t remove all your bypass caps, they are Continue reading EEVblog #1081 – Are Bypass Capacitors REALLY needed?

EEVblog #1080 – Gigatron TTL RISC Kit Computer Review

Review of the Gigatron.io TTL 8 bit RISC computer kit.
http://www.gigatron.io

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

Forum: http://www.eevblog.com/forum/blog/eevblog-1080-gigatron-ttl-risc-kit-computer-review/

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https://kit.com/EEVblog/

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EEVblog #1079 – Mailbag

More mailbag!
Forum: http://www.eevblog.com/forum/blog/eevblog-1079-mailbag/

SPOILERS:
Brads Projects: https://bradsprojects.com/
Microelectronics Timeline Poster:
https://amzn.to/2K35s1n
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 Continue reading EEVblog #1079 – Mailbag

EEVblog #1078 – World’s Thinnest Calculator Teardown!

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: http://www.eevblog.com/forum/blog/eevblog-1078-world‘s-thinnest-calculator-teardown/

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