Join Dave step-by-step as he attempts to find the problem with a non-booting Aiphone GF NS building intercom system. Will a reset chip make a monkey out of him? And as always, a trap for young players is explained. Brochure Install Manual Setup Manual Datasheets: Mitsubishi M16C 24LC128 EEPROM RS232 …

Massive news! A new edition of the bible is almost here, after a 25 year wait! You can pre-order it now on Amazon, for April 30th release. And if you want to help support the blog, then please use THIS LINK and I get a small cut, doesn’t cost you …

Dave does some performance checks and then tears down a Krohn Hite EDC 4601 0.05% 6 decade 1ppm resolution 0-1000V AC voltage standard. Service Manual with schematics MV106 DC Voltage Standard User manual Datasheets: Vactrol XR2228 Multiplier/Decoder Epson SPG8640 oscillator/divider Forum HERE Hires teardown photos: Podcast: Download

Are the laws of physics being bent? Dave explains why free energy / over unity / quantum vacuum circuits are bullshit. And how to find out what’s really happening here by using basic engineering principles. Can a bunch of toroids, some wire, and a simple circuit boost converter really generate …

This video is a response to a forum question that asks if the RP2200 150MHz probe supplied with the DS1054Z is degrading the performance of the scope compared with the 350MHz RP3300 supplied with the DS2000. Are there any performance differences between the two probes on a 100MHz bandwidth DS1054Z? …