// //

EEVblog

The official releases of the EEVblog

EEVblog #709 – EDC 4601 AC Voltage Standard Teardown

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

Read More »

EEVblog #708 – Free Energy BULLSHIT!

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 …

Read More »

EEVblog #707 – Rigol Oscilloscope Probe Performance

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? …

Read More »

EEVblog #706 – Joystick Porn

Dave tears down a top quality industrial joystick, the Penny + Giles JC6000 rugged joystick controller. Thanks to http://www.controldevices.net/ Forum HERE Podcast: Download

Read More »

EEVblog #705 – Mailbag

Mailbag Monday This week two very notable people send in mailbag items! SPOILERS: Book Review: Iconic: A Photographic Tribute to Apple Innovation Colin Mitchell from Talking Electronics 555 Timer LED scanner kit Basic Electronics Course Interviews with Colin Mitchell Bil Herd, designer of the Commodore C128 among others! Amp Hour …

Read More »