EEVblog

Mailbag time again. What have people sent in this week? SPOILERS: AUD$5500 transfer standard 10k resistor in a box from Wekomm! Holy Xeon ECC server memory Batman! AC/DC Back To The Future T-Shirt HeartSine Samaritan Pad Heat Defibrillator K band radar system Forrest Mims Radio Shack books Forrest Mims Amp …

Fundamentals Friday What is Sheet Resistance? Did you know that the resistance of a square copper PCB trace is the same regardless of the size? Dave explains the theory behind this rather counter-intuitive concept called Sheet Resistance, and demonstrates that it is in fact true. What is the ohms per …

Inside the new Keithley DMM7510 7.5 Digit Bench Multimeter What gives this unit it’s superb 14ppm/1year accuracy specification? What construction techniques have they used? How and why are Fluke so heavily involved? What considerations are given to the power supply and isolation aspects? How does it compare with the cheaper …

How ceramic backed precision thin film resistor networks are constructed and laser trimmed. Examples come from the resistor networks in the 7.5 digit Keithley DMM7510 Multimeter, manufactured by Fluke. Forum HERE Podcast: Download

Another lengthy mailbag, with plenty of diverse stuff. RCA Airnergy Bullshit Video Forum HERE SPOILERS: Kan Jam flying disc Psion 3A Organiser 1974 808 RapidMan Calculator made in Canada. Russian IN-9 Neon bargraph display tube. Datasheet Info & characteristic curves Wifi cellphone battery charging bullshit Kickstarter RF Energy Harvesting. Can …