EEVblog

The dumpster really delivered today, with no less than FOUR 4K Retina display iMac’s! Plus a Nikon DSLR camera! Forum: https://www.eevblog.com/forum/blog/eevblog-1748-dumpster-imac-bonanza/ Podcast: Download

Demonstrating the difference between Schottky diodes and PN junction silicon diodes, and how your multimeter can influence your measurement when troubleshooting. Answering an interesting Twitter question. https://x.com/blind_via/status/2052223991839170919 https://www.tti.com/content/ttiinc/en/resources/blog/infographics/schottky-diodes.html https://engineering.purdue.edu/~ee606/downloads/ECE606_f12_Lecture17.pdf Forum: https://www.eevblog.com/forum/blog/eevblog-1746-schottky-vs-pn-diodes-measurement-traps/ 00:00 – Twitter question 01:21 – Recreating the problem 03:08 – Why doesn’t it read zero volts? Let’s try …

A tribute to the 555 timer and Hans Caminzind, which turns 55 years old this year. Released on May the 5th, International 555 Timer Day at 5:55pm with a length of 5:55 And Dave demonstrates blowing out the birthday candle with his 555 Killer One Shot circuit. Use coupon code …

Testing the loudness of a new version of the BM2257 multimeter firmware using the CRY2851 Class 1 sound level meter. https://www.crysound.com/product/cry2851-sound-level-meter/ COUPON CODE: LOUD for 10% off the BM2257 Hardware Store: https://eevblog.store/ 00:00 – BM2257 Firmware changes 01:58 – Crysound CRY2851 Class 1 Sound Level Analyser 06:26 – Lab baseline …

The DP700 is Micsig’s third suck of the sav on a high voltage differential probe. Not to be confused with the MDP700 which this replaces. https://www.micsig.com/DPA/ 00:00 – Comparison to the DP10007 and MDP700 03:58 – Unboxing of the DP700 05:52 – CMRR measurement hardware setup 09:52 – Sanity check …