Power Supplies

Teardowns of the Rohde & Schwarz HMP4040, HMP2020, and NGE103 programmable lab power supplies. Comparisons with other brand PSU’s: There are some comparisons with other brand PSUs https://www.rohde-schwarz.com/brochure-datasheet/hmp/ https://www.rohde-schwarz.com/au/product/hmp4000-productstartpage_63493-47360.html https://www.rohde-schwarz.com/au/product/nge100-productstartpage_63493-387267.html Forum HERE Podcast: Download

Rohde & Schwarz were offended at the quality of the power supplies in the EEVblog lab, so sent in some “real” lab power supplies! Unboxing and first look at the Rohde & Schwarz HMP4040, HMP2020, and NGE103 programmable lab power supplies. Comparisons with other brand PSU’s: There are some comparisons …

Characterising the performance and efficiency of the $25 DPS3003 30V 3A lab power supply module from RDtech. Includes a how-to on measuring DC-DC converter efficiency graphs, with module power loss on the secondary Y axis. XL7005 datasheet Forum HERE Podcast: Download

Dave takes a quick look at the spectacularly cheap $20 DPS series CC/CV modules from RD Tech. How to make a 30V 3A bench power supply with 1mA resolution constant current limiting and multi function display using a junk bin enclosure and a junked plugpack or old computer power supply. …

Dave shows how to do power supply MOSFET rail switching and demonstrates and discusses why supply sequencing might be needed. Forum HERE Podcast: Download