Found in 90s Popular Electronics, this circuit uses common general-purpose transistors in a configuration that has been extensively explored on this site and in our articles.
If the reader needs to monitor a voltage and does not want an expensive or sophisticated solution. In...
This circuit was found in an old Popular Electronics. With it we can check the operation of a...
STMicroelectronics MP23AB02B MEMS Audio Sensor is a compact, low-power microphone built with a...