EEVblog – Podcast

Dave breadboards a 1988 vintage Tandy / Radio Shack VCP200 speaker independent voice recognition chip from Voice Control Products Inc. Will it work after 27 years? Will it recognise his Australian accent? Forum HERE Radio Electronics magazine April 1991 MC68HC04 Datasheet M6804 User Manual Podcast: Download

Dave shows why Uni-T multimeters generally suck in this teardown (and a little bit of a review) of the $180 UT71E 0.025% accuracy multimeter with power measurement capability. He also opens the UT71A, UT61E, and compares the input protection and rating with a Brymen BM257. MAX6190 Voltage Reference OP1177 Opamp …

Mailbag time. Forum HERE SPOILERS: Atom Bombs Book Making of the Atomic Bomb BOOK The Bruces Monty Python Sketch Ideal diode (synchronous rectifier) datasheet Car ECU teardown PAL to RGBS converter teardown Pump controller teardown Meet Edison Educational Robot Casio FX790P scientific calculator pocket computer PAL/NTSC decoder Digilent ChipKIT WF32 …

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 …

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