EEVblog

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