EEVblog

Dave hates products with built in charging that don’t use a standard Micro USB connector. In this case the Panasonic Lumix LF1 with its stupid proprietary connector. Why in this day and age of attempted standardisation are companies still doing this? Dave also shows off a good example, the Sony …

Part 1 HERE Dave gets his precision 1A current source circuit working on a breadboard. LTC6655 VPR221Z Precision 4-terminal Z-Foil resistor from Vishay LTC6655 Voltage Reference OPA376 Podcast: Download

A quick look at Dave’s Advantest R6142 Voltage and Current Source. Can it be used as a current reference for the uCurrent? A look at the stability with temperature and time, and absolute calibration of the unit. Is it an ebay score, or ebay junk? Forum HERE Podcast: Download

Phil VK2BDF from the Manly Warringah HAM Radio Society shows off his 1970’s vintage home made 200MHz DIY spectrum analyser. Forum: http://www.eevblog.com/forum/blog/eevblog-575-diy-1970s-spectrum-analyser/ Podcast: Download

Dave looks through the documentation for the vintage 1980 NEC PCN-1205AH 5kW Analog TV Transmitter that used to transmit the CH7 TV frequency in Sydney He then tears down the HPA-3696 IF Modulator used in the system. Facility tour HERE Forum HERE Podcast: Download