EEVblog No Script, No Fear, All Opinion

Dave reverse engineers the XuanZu X2-U808 Hi-Fi Headphone Amplifier to see if the valves actually do anything. What is the circuit topology? E180F (6J9) pentode valve datasheet Doug Ford’s Microphone design series Playlist Reverse Engineering How-To video Forum HERE Podcast: Download

Franky from the Ebay store 99centHobbies dropped by the lab and we had a quick chat about ebay, selling, shipping, and the Hong Kong electronics scene compared to Shenzhen China. Forum HERE

A 1 hour tour of the Australian Synchrotron. From breadboards to 35MW Kystron RF power amplifiers! Forum HERE Podcast: Download

Part 2 of an impromptu play with Dave’s Wekomm 10K Transfer Resistance Standard. Was the Keithley DMM7510 multimeter the culprit in the discrepancy in the thermal response? Dave finds out with the help of a thermal chamber. Part 1 is HERE Forum HERE Podcast: Download

An impromptu play with Dave’s Wekomm 10K Transfer Resistance Standard. What is the strange discrepancy in drift on the graph on the Keithley DMM7510 multimeter? This is Part 1, don’t forget Part 2 is here: https://www.youtube.com/watch?v=gEDs0OtOkGE Forum HERE Podcast: Download

Christmas Mailbag! Warning: Someone thinks atheist Dave won’t get saved by Jesus, so tries to convert him to Christianity! Forum HERE SPOILERS: Sam Harris destroys christianity VIDEO Bonus Christopher Hitchens vs. God VIDEO Tandy PC-6 Pocket Computer Service Manual HERE Silego GreenPAK4 Mixed Signal Development Kit Isolated USB to RS422/RS485 …

Inside Keysight’s new U1282A IP67 waterproof and 3m drop proof precision dual display 60,000 count 0.025% multimeter with 800 hours battery life 3 for 2 deal U1272A Teardown Forum HERE Podcast: Download

In this Fundamental Friday Dave will blow your mind as he shows you how you can power a microcontroller *without* a power or ground pin! A potentially big trap for young and old players alike. Can you guess how it’s done before the secret is revealed? Forum HERE SPOILER: A …

Take a look inside a vintage 1984 B/W National CRT portable TV Sinclair TV1 Teardown HERE Forum HERE Podcast: Download

Inside the Siglent SDM3055 5.5 digit bench multimeter And check out UI similarities with the Keysight 34461A Forum HERE Podcast: Download

Inside the Siglent SPD3303X Precision Programmable DC Lab Power Supply. UPDATE: There is an even cheaper version, the SPD3303X-E which has 10mV/10mA resolution. Atten PSU teardown video. Rigol DP832 teardown video. Forum HERE Podcast: Download

More Mailbag Monday. Forum HERE SPOILERS: RemoteBoot Kickstarter Digilent PowerBric Arty Artix-7 FPGA Development Board Podcast: Download

One of Dave’s LG Mono-X solar panels has mysteriously shattered! Daily solar output data: http://pvoutput.org/list.jsp?userid=22501 Sorry for the audio and video quality, this was shot on my phone. Forum HERE

Siglent Founder and CEO Eric Qin visited the EEVblog Lab and very kindly agreed to sit down for a quick impromptu chat. Forum HERE Podcast: Download

Did you know that your colour laser printer is secretly printing a forensic code on every one of your printouts so the government can track it? Sounds like a nutjob conspiracy theory, but it’s true! Yellow dots that are invisible to the naked eye are printed all over your page …