This Texas Instruments circuit is from the 80's. However, it can be implemented with modern operating systems. The power supply must be symmetrical.
We found this precision circuit in a manual from the 80's. The operational amplifier is of a...
This circuit makes use of a PLL 567 and the components must be calculated according to the desired...
Combining an Ultra-Low Power MCU with an 802.15.4 Radio, the SAM R30 Enables Long-Lasting Battery...