This circuit was obtained in the 1990 Motorola Linear Databook. The circuit uses a 139 series comparator, but other series can be used. The power source need not be symmetric.
April 2017 - The kit for STMicroelectronics STM32F7 32-bit microcontrollers is available from...
Bike speedometer (CB20497E) This circuit can be powered by a solar cell. The circuit is from a...
The integrated circuit used in this project is not common today, but it can be implemented with more...