Eevblog

EEVblog #579 - Precision Low Current Source

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Duration: 27:38
Updated: 12 Feb 2014

Part 3 in the Precision Current Source series. Dave breadboards a classic precision low current source circuit using the 10V REF102 voltage reference to generate accurate 1mA and 1uA currents. Also some talk about the errors in a typical precision circuit like this. Part 2: http://www.youtube.com/watch?v=O2ohz8DyJoQ Part 1: http://www.youtube.com/watch?v=pXMhpEi_wPU REF102: http://www.ti.com/lit/ds/sbvs022b/sbvs022b.pdf App Note: http://www.ti.com/lit/an/sbva001/sbva001.pdf OPA277: http://www.ti.com/lit/ds/symlink/opa4277.pdf VishayPG VHP100: http://www.vishaypg.com/docs/63003/vhp100.pdf Forum: http://www.eevblog.com/forum/blog/579-precision-current-source/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_579_Precision_Low_Current_Source

EEVblog #580 - Q&A;

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Duration: 186:14
Updated: 14 Feb 2014

3 hours of Dave answering questions from the Youtube audience. Part 1. Forum: http://www.eevblog.com/forum/blog/eevblog-580-qa/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_580_Q&A;

EEVblog #576 - Advantest R6142 Current Voltage Generator

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Duration: 20:25
Updated: 03 Feb 2014

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 EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_576_Advantest_R6142_Current_Voltage_Generator

EEVblog #578 - Proprietary Connector Rant - Panasonic LF1

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Duration: 3:42
Updated: 09 Feb 2014

Dave hates products with built in charging that don't use a standard Micro USB connector. In this case the Panasonic Lumix LF1 with its stupid proprietary connector. Why in this day and age of attempted standardisation are companies still doing this? Dave also shows off a good example, the Sony NEX-5T that charges from standard Micro USB. http://amzn.to/1fNgi5l Forum: http://www.eevblog.com/forum/blog/eevblog-578-proprietary-connector-rant/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_578_Proprietary_Connector_Rant_Panasonic_LF1

EEVblog #569 - Tour of an Analog TV Transmission Facility

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Duration: 61:31
Updated: 17 Jan 2014

Ever wondered how they transmit your TV signal? David Kilpatrick from TXAustralia takes us on a detailed tour of the old decommissioned 10kW analog TV transmission system at the Artarmon facility in Sydney. It is still used to transmit digital TV. How it all works from the broadcaster video input to final transmission output up the 180m broadcast antenna. Plus some teardowns of the old equipment that's been used to transmit the Channel 7 TV signal in Sydney since 1981. Copper rigid coaxial lines, waveguides, filters, splitters, combiners, converters, transmission valve, power supplies and all the equipment necessary to transmit a 10kW analog or digital TV signal in a major city like Sydney. The end of Australian analog TV: http://www.youtube.com/watch?v=8q_S0Fk3dyM David is happy to answer technical questions on the forum: http://www.eevblog.com/forum/blog/eevblog-569-tour-of-an-analog-tv-transmission-facility/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_569_Tour_of_an_Analog_TV_Transmission_Facility

EEVblog #575 - DIY 1970s Spectrum Analyser

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Duration: 13:41
Updated: 31 Jan 2014

Phil VK2BDF from the Manly Warringah HAM Radio Society shows off his 1970's vintage home made 200MHz DIY spectrum analyser. Forum: http://www.eevblog.com/forum/blog/eevblog-575-diy-1970s-spectrum-analyser/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_575_DIY_1970s_Spectrum_Analyser

EEVblog #558 - Beta Layout DIY SMD Thermal Reflow Oven

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Duration: 55:27
Updated: 20 Dec 2013

Dave plays around with converting a toaster oven into a surface mount SMD reflow oven with a beginner kit and controller from Beta Layout. Includes basic calibration and thermal profiling of the oven. Also a look at an example PCB from PCB-Pool, and reflow of an example board with lead-free solder paste. And using an Agilent bluetooth multimeter to remote log the temperature. http://www.beta-estore.com/rkuk/order_product_details.html?p=13 http://www.beta-estore.com/rkuk/order_product_details.html?p=242 Paste: http://www.aimsolder.com/sites/default/files/nc254_sac305_solder_paste_rev_17_0.pdf http://www.maximintegrated.com/datasheet/index.mvp/id/3149 Forum: http://www.eevblog.com/forum/blog/eevblog-558-beta-layout-diy-smd-thermal-reflow-oven/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_558_Beta_Layout_DIY_SMD_Thermal_Reflow_Oven

EEVblog #555 - 555 Timer Kit

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Duration: 62:29
Updated: 10 Dec 2013

Dave celebrates the classic 555 timer IC by building the Evil Mad Scientist "three fives" discrete timer kit. Some scope measurements and an explanation of the internal 555 timer circuitry follow. Construction: http://youtu.be/U6qZPx4uD0g?t=5m10s Testing: http://youtu.be/U6qZPx4uD0g?t=34m35s Circuit Description: http://youtu.be/U6qZPx4uD0g?t=38m16s Waveforms: http://youtu.be/U6qZPx4uD0g?t=54m35s Classic old Signetics 555 timer datasheet: http://serge.bertorello.free.fr/compsnts/ne555%20&%20ne556.pdf The kit: http://shop.evilmadscientist.com/productsmenu/tinykitlist/652 Han's Book on Analog chip design: http://www.designinganalogchips.com/ Forum: http://www.eevblog.com/forum/blog/eevblog-555-555-timer-kit/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_555_555_Timer_Kit

EEVblog #573 - Mailbag

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Duration: 48:28
Updated: 27 Jan 2014

Mailbag Monday SMD Adapter PCBs: https://github.com/maugsburger NXP SMD Package Cheats: http://www.nxp.com/documents/other/Discretes_package_poster.pdf http://www.nxp.com/documents/other/Discrete_Flat_No-leads_DFN_package_poster.pdf HP 41 Calculator upgrade PCB http://systemyde.com/hp41/ OHARARP Lab Notebooks: http://ohararp.com/ CNC-Design in Finland Laser Cut 3D Signs: http://www.cnc-design.fi Hacked Microsoft Lifecam DIYINHK USB Microscope: http://www.diyinhk.com/shop/usb-microscope-1080p-for-smt-soldering/48-1080p-smt-microscope.html uARM 4-Axis Arduino Open Source Hardware Robotic Arm Kickstarter: https://www.kickstarter.com/projects/ufactory/uarm-put-a-miniature-industrial-robot-arm-on-your Forum: http://www.eevblog.com/forum/blog/eevblog-573-mailbag/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_573_Mailbag

EEVblog #559 - Auction Score

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Duration: 32:13
Updated: 21 Dec 2013

Dave shows off his loot from a recent auction. Tektronix TDS3054 500MHz 4 channel oscilloscopes, TDS220's, DMM916 multimeters, Simpson 260 analog multimeters, and an 1960's AVO transistor tester. Microchip TC8129: http://www.datasheetarchive.com/dlmain/Datasheets-19/DSA-360767.pdf Forum: http://www.eevblog.com/forum/blog/eevblog-559-auction-score/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_559_Auction_Score

EEVblog #513 - Mailbag

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Duration: 32:21
Updated: 02 Sep 2013

Mailbag galore. Dave screws up and releases the magic smoke on the best mailbag item ever. Turns a light bulb on with his mobile phone, and goes underwater in a submarine. And a cameo appearance by everyone's favorite. http://www.tooms.dk/ http://shackspace.de/ http://lightdream.com.au/ http://www.avbotz.com/ http://jmedved.com/usbamps EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_513_Mailbag

EEVblog #577 - Precision 1A Current Source Part 2

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Duration: 31:31
Updated: 06 Feb 2014

Part 1: http://www.youtube.com/watch?v=pXMhpEi_wPU Dave gets his precision 1A current source circuit working on a breadboard. LTC6655 http://cds.linear.com/docs/en/datasheet/6655fc.pdf VPR221Z Precision 4-terminal Z-Foil resistor from Vishay: http://www.vishaypg.com/docs/63116/vpr221z.pdf LTC6655 Voltage Reference: http://cds.linear.com/docs/en/datasheet/6655fd.pdf OPA376: http://www.ti.com/lit/ds/sbos406f/sbos406f.pdf EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_577_Precision_1A_Current_Source_Part_2

EEVblog #541 - Mailbag

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Duration: 35:25
Updated: 29 Oct 2013

Mailbag time. CERN Large Hadron Collider Playstation 3 Yellow LED of Death LME49990 http://www.ti.com/product/lme49990 AD797 http://www.analog.com/static/imported-files/data_sheets/AD797.pdf Some vintage calculators: http://www.datamath.org/Related/Canon/Checkbook.htm The first Teletype mailbag letter! http://www.youtube.com/watch?v=fqASeTzb9dE Old Fluke Multimeter parts Micro robotic creatures Forum: http://www.eevblog.com/forum/blog/eevblog-541-mailbag/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_541_Mailbag

EEVblog #572 - Cascading Opamps For Increased Bandwidth

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Duration: 22:01
Updated: 25 Jan 2014

Fundamentals Friday. Dave explains Gain Bandwith Product and how it's possible to increase your system bandwidth by cascading opamps in series. Also, a discussion on the associated noise issues. A breadboard example shows how variable GBWP can be, and how it can relate to distortion. Opamp Noise Tutorial: http://www.youtube.com/watch?v=Y0jkPLuFdnM Forum: http://www.eevblog.com/forum/blog/eevblog-572-cascading-opamps-for-increased-bandwidth/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_572_Cascading_Opamps_For_Increased_Bandwidth

EEVblog #574 - NEC Analog TV IF Modulator Teardown

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Duration: 72:36
Updated: 29 Jan 2014

Dave looks through the documentation for the vintage 1980 NEC PCN-1205AH 5kW Analog TV Transmitter that used to transmit the CH7 TV frequency in Sydney He then tears down the HPA-3696 IF Modulator used in the system. Facility tour: http://www.youtube.com/watch?v=mR_wJkxKSXU Forum: http://www.eevblog.com/forum/blog/eevblog-574-nec-analog-tv-if-modulator-teardown/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_574_NEC_Analog_TV_IF_Modulator_Teardown

EEVblog #566 - Cheap USB Microscope Reviews

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Duration: 27:46
Updated: 07 Jan 2014

Dave takes a look at two cheap USB microscopes to see how suitable they are for electronics works and soldering and inspection. http://amzn.to/JEXuLH Andonstar/Vividia 2MP 12mm diameter endoscope style USB microscope: http://amzn.to/1cLfhHr http://www.ebay.com.au/itm/171176517011 Forum: http://www.eevblog.com/forum/blog/eevblog-566-cheap-usb-microscope-reviews/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_566_Cheap_USB_Microscope_Reviews

EEVblog #436 - Saleae USB Logic Analyser Review & Teardown

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Duration: 37:04
Updated: 15 Aug 2013

Review and teardown of the 8 channel Saleae USB Logic Analyser. http://www.amazon.com/gp/product/B004G4ZKA6/ref=as_li_ss_tl?ie=UTF8&camp;=1789&creative;=390957...

http://wn.com/EEVblog_436_Saleae_USB_Logic_Analyser_Review_Teardown

EEVblog #253 - KiCAD Install & Schematic - First Impressions

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Duration: 45:01
Updated: 01 Aug 2013

A continuous 45min screen cast of Dave installing and running KiCAD for the first time, along with his first impressions and rants about things he finds alon...

http://wn.com/EEVblog_253_KiCAD_Install_Schematic_First_Impressions

EEVblog #527 - Altium Entry Level PCB Tool Rant

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Duration: 12:54
Updated: 26 Sep 2013

Altium have announced their intention to (finally!) offer a low cost "entry level" PCB design tool. Dave naturally has his Top 5 Tips for Altium to ensure that they don't screw up this opportunity. Souce: http://www.altium.com/resources/investor_announcement/asx_releases/ASX_Announcement_Altium_Investor_Presentation_FY2014.pdf Be sure to leave your comments on youtube or the blog site or the forum to tell Altium what you want. They will be watching. Forum: http://www.eevblog.com/forum/blog/eevblog-527-altium-entry-level-pcb-tool-rant/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_527_Altium_Entry_Level_PCB_Tool_Rant

EEVblog #415 - SMD Stencil Reflow Soldering Tutorial

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Duration: 31:01
Updated: 18 Aug 2013

Dave shows you how easy it is to do surface mount SMD reflow soldering with a solder paste stencil and a hot air gun: http://astore.amazon.com/eevblogstore-2...

http://wn.com/EEVblog_415_SMD_Stencil_Reflow_Soldering_Tutorial

EEVblog #523 - REPAIR: HP 35660A Dynamic Signal Analyser

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Duration: 36:06
Updated: 20 Sep 2013

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/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_523_REPAIR_HP_35660A_Dynamic_Signal_Analyser

EEVblog #570 - LAB Cleanup And Shelving

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Duration: 12:27
Updated: 19 Jan 2014

Dave cleans up the lab and adds some shelves. Exciting stuff. Original lab timelapse build: http://www.youtube.com/watch?v=lhsgJnrkQYc Forum: http://www.eevblog.com/forum/blog/eevblog-570-lab-cleanup-and-shelving/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

http://wn.com/EEVblog_570_LAB_Cleanup_And_Shelving

EEVblog #446 - Dumpster Diving Samsung Plasma TV

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Duration: 34:16
Updated: 18 Aug 2013

Dave goes Dumpster Diving again and scores a Samsung 42 PS-42S5H Plasma TV Forum Topic: http://www.eevblog.com/forum/blog/eevblog-446-dumpster-diving-samsung...

http://wn.com/EEVblog_446_Dumpster_Diving_Samsung_Plasma_TV

EEVblog #579 - Precision Low Current Source

EEVblog #580 - Q&A;

EEVblog #576 - Advantest R6142 Current Voltage Generator

EEVblog #578 - Proprietary Connector Rant - Panasonic LF1

EEVblog #569 - Tour of an Analog TV Transmission Facility

EEVblog #575 - DIY 1970s Spectrum Analyser

EEVblog #558 - Beta Layout DIY SMD Thermal Reflow Oven

EEVblog #555 - 555 Timer Kit

EEVblog #573 - Mailbag

EEVblog #559 - Auction Score

EEVblog #513 - Mailbag

EEVblog #577 - Precision 1A Current Source Part 2

EEVblog #541 - Mailbag

EEVblog #572 - Cascading Opamps For Increased Bandwidth

Make changes yourself !

EEVblog #579 - Precision Low Current Source

EEVblog #580 - Q&A;

EEVblog #576 - Advantest R6142 Current Voltage Generator

EEVblog #578 - Proprietary Connector Rant - Panasonic LF1

EEVblog #569 - Tour of an Analog TV Transmission Facility

EEVblog #575 - DIY 1970s Spectrum Analyser

EEVblog #558 - Beta Layout DIY SMD Thermal Reflow Oven

EEVblog #555 - 555 Timer Kit

EEVblog #573 - Mailbag

EEVblog #559 - Auction Score

EEVblog #513 - Mailbag

EEVblog #577 - Precision 1A Current Source Part 2

EEVblog #541 - Mailbag

EEVblog #572 - Cascading Opamps For Increased Bandwidth

EEVblog #574 - NEC Analog TV IF Modulator Teardown

EEVblog #566 - Cheap USB Microscope Reviews

EEVblog #436 - Saleae USB Logic Analyser Review & Teardown

EEVblog #253 - KiCAD Install & Schematic - First Impressions