Published By
Created On
28 Nov 2019 06:21:13 UTC
Transaction ID
Cost
Safe for Work
Free
Yes
EEVblog #745 - Mailbag
Mailbag time again. Dave opens his mail. What random stuff awaits?
Forum: http://www.eevblog.com/forum/blog/eevblog-745-mailbag/
SPOILERS:
A vintage Japanese Sharp X68000 video game home computer from the 1980's
Teardowns of an industrial controller, a LED light controller, ABB industrial switchmode power supply, Casio FX-3800P programmable calculator, old Gossen digital multimeter and a German analog meter.
Belgian chocolate.
Surprise visit by Sagan
Two Kickstarter Projects:
Femtocow USB912
...
https://www.youtube.com/watch?v=RRSHrGQ_UDk
Forum: http://www.eevblog.com/forum/blog/eevblog-745-mailbag/
SPOILERS:
A vintage Japanese Sharp X68000 video game home computer from the 1980's
Teardowns of an industrial controller, a LED light controller, ABB industrial switchmode power supply, Casio FX-3800P programmable calculator, old Gossen digital multimeter and a German analog meter.
Belgian chocolate.
Surprise visit by Sagan
Two Kickstarter Projects:
Femtocow USB912
...
https://www.youtube.com/watch?v=RRSHrGQ_UDk
Author
Content Type
Unspecified
video/mp4
Language
Unspecified
More from the publisher
VIDEO
EEVBL
eevblog-677-mailbag
Mailbag Monday
Dave opens his mail.
Spoilers & Links:
HP 4260A LCR Universal Bridge
http://cp.literature.agilent.com/litweb/pdf/04260-90011.pdf
iPod Blood pressure monitor
Old computer hardware
Intel 1Mb Bubble Memory
...
https://www.youtube.com/watch?v=wq2BGsgaPk0
Transaction
Created
1 year ago
Content Type
Language
video/mp4
Controlling
VIDEO
EEVBL
eevblog-1136-banksy-artwork-shredder
Banksy posted an update video showing more of the prank build and the shredding mechanism. But he's still trolling us!
Banky's Directors Cut video: https://www.youtube.com/watch?v=vxkwRNIZgdY
Forum: http://www.eevblog.com/forum/blog/eevblog-1136-banksy-artwork-shredder-part-2-(still-trolling!)/
EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2
...
https://www.youtube.com/watch?v=8dbYGefDdWo
Transaction
Created
1 year ago
Content Type
Language
video/mp4
VIDEO
EEVBL
eevblog-712-uni-t-ut71e-multimeter-why
Dave shows why Uni-T multimeters generally suck in this teardown (and a little bit of a review) of the $180 UT71E 0.025% accuracy multimeter with power measurement capability.
He also opens the UT71A, UT61E, and compares the input protection and rating with a Brymen BM257.
http://uni-trend.com/UT71E.html
MAX6190 Voltage Reference: http://datasheets.maximintegrated.com/en/ds/MAX6190-MAX6198.pdf
OP1177 Opamp: http://www.analog.com/static/imported-files/data_sheets/OP1177_2177_4177.pdf
Cyrustek ES51922 DMM chipset: http://www.cyrustek.com.tw/spec/ES51922.pdf
Holtek HT1621 LCD driver: http://www.ywslcm.com/Upload/tbDownload/2013-4-13_9_37_49.pdf
AD636 True RMS Converter chip: http://www.analog.com/static/imported-files/data_sheets/AD636.pdf
...
https://www.youtube.com/watch?v=i2Tkm21dI1g
Transaction
Created
1 year ago
Content Type
Language
video/mp4
VIDEO
EEVBL
eevblog-933-keysight-u1272a-emc-issue
A viewer found an EMC issue with the Keysight U1272A multimeter
Dave confirms both conducted and coupled issues and finds some spooky action at a distance!
Comparisons with other meters confirm they don't have the same issue.
Fluke 87 GSM Problem: https://www.youtube.com/watch?v=-13Q-UsXKQM
Forum: http://www.eevblog.com/forum/blog/eevblog-933-keysight-u1272a-emc-issue/
EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2
...
https://www.youtube.com/watch?v=DVXPGj0Pjyc
Transaction
Created
1 year ago
Content Type
Language
video/mp4
VIDEO
EEVBL
eevblog-1027-implantable-neurostimulator
What's inside an implantable Medtronics Itrel 3 Neurostimulator designed for Neuropathic pain reduction.
Dave tears into the ultrasonically welded titanium case.
Manual: http://www.neuromodulation.ch/sites/default/files/pictures/itrel3_implant_manual.pdf
Forum: http://www.eevblog.com/forum/blog/eevblog-1027-implantable-neurostimulator-teardown/
EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2
...
https://www.youtube.com/watch?v=sNW3Xqtgkus
Transaction
Created
1 year ago
Content Type
Language
video/mp4
VIDEO
EEVBL
eevblog-483-microcontroller-voltage
How a diode voltage inverter circuit works.
Turns any PWM or clock signal into a low power negative voltage rail.
This can be clocked from a microcontroller, existing DC-DC converter, 555 timer etc.
Voltage Doubler Video: http://www.youtube.com/watch?v=I4ED_8cuVTU
Forum: http://www.eevblog.com/forum/blog/eev...
EEVblog Main Web Site:
http://www.eevblog.com
...
https://www.youtube.com/watch?v=LtoPHevexTM
Transaction
Created
1 year ago
Content Type
Language
video/mp4
Controlling
VIDEO
EEVBL
eevblog-1316-quantum-computing-for
Quantum Computing from an Electrical Engineering perspective, with professor Andrea Morello from UNSW.
Full video on EEVdiscover: https://www.youtube.com/watch?v=jDW9bWSepB0
Forum: https://www.eevblog.com/forum/blog/eevblog-1316-quantum-computing-for-electrical-engineers/
#QuantumComputing #Science
EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2
Support the EEVblog through Patreon!
http://www.patreon.com/eevblog
AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g
Buy anything through that link and Dave gets a commission at no cost to you.
Donate With Bitcoin & Other Crypto Currencies!
https://www.eevblog.com/crypto-currency/
T-Shirts: http://teespring.com/stores/eevblog
...
https://www.youtube.com/watch?v=nOQhdgY8aBM
Transaction
Created
1 year ago
Content Type
Language
video/mp4
VIDEO
EEVBL
eevblog-543-pcb-via-current
Dave tests the myth that plugging a PCB VIA with solder does nothing (or not much) to improve the current handling capability. Is manual wire feed-through any better?
Does the industry rule of thumb of 0.5A per VIA have any basis?
What is the typical plated VIA/hole thickness?
Saturn PCB Toolkit: http://saturnpcb.com/pcb_toolkit.htm
Previous videos on PCB solder coating:
http://www.youtube.com/watch?v=L9q5vwCESEQ
http://www.youtube.com/watch?v=cScVqD6eIaU
Does a PCB VIA halve in resistance like a PCB trace does when coated with solder?
Forum: http://www.eevblog.com/forum/blog/eevblog-543-pcb-via-current-investigation/
...
https://www.youtube.com/watch?v=vPm-qMyNwpo
Transaction
Created
1 year ago
Content Type
Language
video/mp4
Controlling
VIDEO
EEVBL
eevblog-57-agilent-thumbs-up-furore
Dave responds to the furore over his thumbs up rating on the Agilent U1253A Multimeter
And it's all about the love, really.
ADDED COMMENT:
Agilent make the exact same meter in an LCD version (U1251A or U1252A) with longer battery life. So you get the choice of display vs battery life!
...
https://www.youtube.com/watch?v=vyx6kAdHzhg
Transaction
Created
7 months ago
Content Type
Language
video/mp4
English