A quick look at Dave's Advantest R6142 Voltage and Current Source.
Can it be used as a current reference for the uCurrent?
A look at the stability with temperature and time, and absolute calibration of the unit.
Is it an ebay score, or ebay junk?
Forum: http://www.eevblog.com/forum/blog/eevblog-576-advantest-r6142-current-voltage-generator/
User manual and service manual are here:
https://www.dropbox.com/sh/xb08own94f6sf9k/hDk_cZC2I5
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Another ebay score.
Dave tears down a HP4263A LCR Meter.
How an LCR Meter works: https://www.youtube.com/watch?v=fs2MfTW4o_Q
Forum: http://www.eevblog.com/forum/blog/eevblog-757-hp4263a-lcr-meter-teardown/
4263A Datasheet:
http://www.testequipmenthq.com/datasheets/Agilent-4263A-Datasheet.pdf
4263A User Manual:
http://literature.cdn.keysight.com/litweb/pdf/04263-90001.pdf?id=722686
4263B service manual: http://www.doe.carleton.ca/~nagui/labequip/lcr/4263B_Service%20Manual.pdf
X28C64 EEPROM: http://pdf.datasheetcatalog.com/datasheets/120/291528_DS.pdf
82C54 Programmable Interval Timer http://www.intersil.com/content/dam/Intersil/documents/82c5/82c54.pdf
Precision DiFET opamp
OPA627 http://www.ti.com/lit/ds/symlink/opa627.pdf
List of Keysight part numbers: http://literature.cdn.keysight.com/litweb/pdf/5989-5950EN.pdf
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Part 11 in the PSU design series.
This time it's the housing design based on the new Rev C schematic, and the secret reason behind the project!
The next video will follow with an overview of the Rev C schematic.
Dave shows you how to setup, measure and generate an Efficiency vs Load Current characteristic curve for a DC-DC converter, just like you see in the datasheets.
Several traps for young players are discussed, along with plotting Logarithmic axis charts in a spreadsheet.
Electronic Load Kit: http://amzn.to/2i4cUdF
BM235 Multimeter: http://amzn.to/2hJp78T
Rigol PSU: http://amzn.to/2gZWkhw
DIY Electronic Load video: https://www.youtube.com/watch?v=8xX2SVcItOA
Forum: http://www.eevblog.com/forum/blog/eevblog-957-how-to-measure-dc-dc-converter-efficiency/
EEVblog Main Web Site: http://www.eevblog.com
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What's inside the Trezor hardware bitcoin wallet?
A teardown to look at any physical hardware security, and a look at a possible side channel power line attack.
http://amzn.to/2uk2ccP
For a new stable attempt at cryptocurrency, check out Corion:
http://corion.io/-f1
UPDATE: A technical detailed reply from the Trezor developer!
http://www.eevblog.com/forum/blog/eevblog-1006-trezor-bitcoin-hardware-wallet-teardown/msg1255268/#msg1255268
CLARIFICATION: SatoshiLabs does not hold your wallet private key, it is encoded on the hardware with your custom PIN. Satoshi Labs only holds the private keys for the signing of the firmware.
Forum: http://www.eevblog.com/forum/blog/eevblog-1006-trezor-bitcoin-hardware-wallet-teardown/
Donate with Crytpo!
https://www.eevblog.com/crypto-currency/
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Because Jeri goofed up my video on the live 555 contest show and chopped off the end, here is the full video!
Check out Alan's Adding Machine:
http://www.vk2zay.net/article/258
Dave repairs a classic HP 35660A Dynamic Signal Analyser (DSA), and does a bit of a teardown with random commentary in the process.
Service Manual: http://cp.literature.agilent.com/litweb/pdf/35660-90050.pdf
Forum: http://www.eevblog.com/forum/blog/eevblog-523-repair-hp-35660a-dynamic-signal-analyser/
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