A very low power ETSI Class 1 receiver capable RF subsystem for wM-Bus capable smart gas and water meters at 169 MHz. This design provides market leading blocking, selectivity and RX sensitivity figur
# Calculate time delay using the cross-correlation method#### Assume that the known signal is a Chirp signal with a starting frequency of 250Hz and an ending frequency of 2000Hz, and the received sign
[i=s]This post was last edited by DDZZ669 on 2021-8-8 17:47[/i]The previous articles introduced the transplantation of uboot and kernel . This article builds the root file system , which is the last s
[i=s]This post was last edited by MianQi on 2020-12-21 17:32[/i]According to the introduction of the STM32 L5 series, the biggest highlight of this chip is the activation of the M33 core, and the most
(1) High zinc type (known as "conventional zinc type" abroad):
The zinc content in the oil is ≥ 0.07%. This type is the main type of HM oil at home and abroad. It has the best wear resistance for stee