This humidity sensor indicates the different levels of conduction of the sensors through an LED bar. The circuit is from Popular Electronics and must be powered by cells or battery.
This circuit generates signals for the calibration of IFI (Intermediate Frequency) of traditional AM and...
) This circuit was obtained in 1965 General Electric documentation. SCRs can be modern common...
The adjustment of the maximum load voltage is made in the trimpot. The circuit is from 1994...