EEVblog #629 – How To Design a Microphone Preamplifier

Part 7 of Microphone Technology with Doug Ford, former head designer at Rode Microphones. This video Doug takes you through the design of the Rode NT3 and NT1000 microphone designs. There is a ton of stuff in here: Closed loop unity gain JFET and bipolar follow circuits. Bootstrapping out miller …

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EEVblog #627 – Dumpster Dive

What booty awaits another night time dumpster dive raid on the garbage room? Dave scores a HP Laserjet 3700 colour printer and an ASUS P7P55D-E LX USB 3.0 motherboard with Intel i7-870 processor. Podcast: Download

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EEVblog #626 – Ceramic Capacitor Voltage Dependency

Dave explains, shows, and measures a potentially big trap with using high value ceramic capacitors. If your 10uF capacitor really 10uF in your circuit? Those humble X7R caps you think are a “stable” dielectric? think again… Class II and above ceramic capacitors can vary their capacitance drastically with DC bias …

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EEVblog #625 – Retro Teardown: Sony’s First Digital Camera

Dave tears down Sony’s first digital camera that used removable media, a 3.5″ floppy drive! The 640×480 resolution 0.3Mpixel 1997 vintage Sony Mavica MVC-FD7 Original photos form the camera are HERE Datasheets: MB88146AP UPD72069 Floppy-Disk Controller AD9801 CCD image sensor processor MB90089 OSD SH7032 32 Bit Microcontroller: MB3785A Switching Regulator …

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EEVblog #624 – Mailbag

EEVblog2 2nd Youtube Channel: And Engineers Guide To Solving Problems BOOK https://www.youtube.com/user/trombonista92 A really crappy line tracer circuit patent Geppetto Electronics LCDuino RGB backpack TmpUSB temporary USB drive: PIC Development Boards https://www.youtube.com/user/BoomBrush Sony Mavica 3.5″ Floppy Drive Digital Camera X-Core 16 Core 1000MIPS Analog Slice Kit: Podcast: Download

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EEVblog #623 – See Through Thermal Camera Followup

Want to see through a visually opaque material? it’s easy with a thermal imaging camera and a bit of physics. Dave also follows up on the cling wrap ESD issue with some measurements and alternatives. Previous video – How To See Through Objects With A Thermal Camera Anti-static bag myth …

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The Economics Of Selling Your Hardware Project

I’ve had quite a few people ask why I am not selling my µCurrent through international distributors like I did last time. Well, that’s a good question, and I’ll answer that as well as breaking down the economics of selling your own hardware product, what price you should sell your …

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EEVblog #619 – Dumpster Dive PABX Teardown

See the EEVblog lab LIVE Panasonic KX-TVP100AL Voice Processing System: Panasonic KX-TD816AL Digital Super Hybrib System PABX Installation Manual NEC Zen Alpha Datasheets: 3W isolated DC DC converter MT8952 HDLC Protocol Controller MC14LC5480 PCB Codec Filter MT8941 T1/CEPT Digital Trunk PLL MT8952 HDLC Protocol Controller Forum HERE Podcast: Download

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EEVblog #618 – Mailbag

Mailbag Monday SPOILERS and links to thinks in this this mailbag: Philips XX 1080 nigh vision image intensifier tube Pimoroni Pirate Crew Pibow Raspberry Pi case Audiovox CDM-9000 Tri-Band mobile phone https://www.youtube.com/user/channelengineer PICcell 12F PCmicro breadboard module Zipip Wireless Messenger 2 Forum HERE Podcast: Download

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