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Page Last Modified Comment
About the Author 20 Jan 2011
About these Pages 23 Jan 2011
Ametek 50 Teardown 13 Sept 2014
Arduino Based car multi display 14 Dec 2017 update
Audiowave Aspire Pro Repair 13 Apr 2014
Alternative Power for my Home 14 Dec 2017 update
Amp Hour Meter Project 25 Jan 2014
Alpine CDA 9886 Mod 05 Mar 2012
Alpine H701 Mod 19 Aug 2012
Arduino Battery Metering 25 Jul 2017 update
Articles Page 15 Feb 2011
Car Subwoofer Box ** 30 Mar 2011
CC/CV Regulated Bench supply 12 Jan 2014
Celestra RA475x Modification 31 Mar 2012
Celestra RA475x Review 17 Dec 2011
Cellphone Battery Testing Jig 08 Apr 2017
Cheap Flashlight Mod 24 Nov 2017 new
Cheap Flashlight / Tazercombo teardown 25 Oct 2015
Cheap HID ballast teardown 09 Aug 2016
Cheap Mini Inverter 22 Nov 2016
Cheap Mini LED bar 24 May 2017 update
Cheap Mini Inverter 22 Nov 2016
Cheap relay and socket teardown 26 Aug 2015
Cheap Solar Charge Controllers 09 Jul 2013
Cheap Tachometer Teardown and Mod 01 Oct 2015
Component Tester and Jig 17 Oct 2015
Contact 20 Jan 2011
Craftsman 82369 Multimeter Mod 19 Mar 2015
CRSNB Inverter repair 29 Aug 2016
DC-DC Converter module 15 Jun 2013
DCX2496 Mod 22 July 2012
Discrete Lithium Ion Battery charger 23 Apr 2011
DIY amplifiers pt1 ** 2004
DIY amplifiers pt2 ** 2004
DIY HID Flashlight 06 Nov 2011
DIY Laser Power Meter 28 Apr 2013
DIY RTA 05 Mar 2013
DIY SMD Tweezer 08 Apr 2017
Electronic pressure switch 10 June 2012
EPsolar charge controllers 07 Oct 2015
ETCR007AD Teardown 09 Jan 2016
Fake CP Battery Teardown 07 Nov 2015
Fake ICL7660 06 Mar 2016
Fangpusun Charge Controllers 30 Aug 2016
Fangpusun Inverters 08 Sept 2015
Farm Off Grid System 15 Jul 2017 update
Gaia Grid Tie Inverter 10 Jan 2016
Genesis Profile Amp repair and teardown 01 Oct 2015
Hakko FR-300 Teardown and Mod 19 Apr 2016
Hakko FX-888 Mod 11 Feb 2012
Helix DSP Repair 15 Jan 2017
Helix P Six DSP 15 Oct 2017 new
HID bike Light 05 Jul 2017 update
High current 12V Bench supply 06 Jan 2015
High End Line Driver 23 Jan 2011
High power P101 Home amp 22 July 2012
Hobby ** 25 Jan 2011
Hypex UcD car amp 09 Feb 2014
Index --- ---
Infinitum Desulfator Review 23 Nov 2017 update
USB LED Bulb Mod 30 Jul 2017 new
LED conversion 17 Oct 2015
LiitoKala Engineer Lii-500 07 Mar 2017
Links to other sites 18 Nov 2011
Lithium Ion Battery Pack 19 May 2017
Magic LED Bulb 24 Nov 2017 update
Matek USB power monitor teardown 24 Dec 2015
McIntosh MX5000 repair and restore 29 Aug 2013
Micro Fly Cutter 15 Oct 2017 new
Micro Table Saw 08 Oct 2015
Mini Test Oscillator 06 Nov 2011
Multilayer PCB 04 Oct 2011
My Daily driver 14 Dec 2017 update
My GPS Plaything 15 Nov 2017 update
My Lasers 24 Mar 2013
Nitecore i4 charger teardown 20 Jun 2013
PCB Drill speed controller 13 Sep 2016
PCB Drill Rig 04 Oct 2011
Phone Horn 15 Jan 2012
Portable current source 21 Oct 2016
Portapow USB Meter teardown 29 May 2017
Powerstar Inverter Teardown 23 Feb 2017
Powertech Inverter Teardown and Mod 16 Oct 2017 new
Projects Page 15 Feb 2011
PV Module Snail Trail Testing 27 Nov 2015
PWK designed car sub 09 Nov 2011
PWM Fan Speed Controller 24 Feb 2014
Really Cheap Powerbanks 24 Dec 2016
Rostock MAX 3D printer 04 Jan 2014
Schiit Asgard Mod 23 Feb 2012
Schiit Bifrost 01 Mar 2012
Simple Frequency reference 31 Jan 2014
Sitemap 17 Feb 2011
Site Updates 17 Feb 2011
SMD pick and place assembly 21 Aug 2013
SMPS Project ** 2004
Solar Powerbank Teardown 29 Nov 2015
Sunway MPPT controller teardown 28 Aug 2015
Suoer charge controllers 08 Nov 2014
Suoer Inverters 07 Feb 2015
Suoer SON-20A charger review/teardown 18 Jul 2017 update
Super Cheap Car Stereos 29 Dec 2015
Systems page ** 2004
TBE inverter teardown 16 Dec 2014
TBF inverter teardown 11 May 2015
The Workshop 21 Jan 2011
Thrunite Neutron 2C v2 teardown 21 Aug 2016
Turnigy MAX80W teardown 19 Jun 2016
USB LED Bulb Mod 30 Jul 2017 new
Vented full range PC speaker ** 23 Feb 2011
Wattmeter Clamp Mod 26 Nov 2015
WindBoost 02 Dec 2014
1200 Lumen LED Rear Foglamp 21 Apr 2013
12V Power Bank 03 Feb 2017
12V Solar Power Bank 26 Jul 2017 update
1700 watt system ** 2004
2 Stage Shift Light 24 Mar 2014
2 Way crossover with chip amp ** 21 Feb 2011
4 Channel Dummy Load 31 Mar 2014
440 watt system ** 2004
5 channel mixer ** 2004
5 way Linkwitz Riley crossover ** 2004
$10 Parts Express sub amp 11 Feb 2011

(comments are added for the latest two months or so)
Pages that link back to the old site are marked with a "**".

Page created and copyright R.Quan © 2004.