This 9 V battery eliminator was found in Radio Electronics magazine from June 1966. The transistor is of medium power and must be equipped with a small heat sink.
We find this circuit in an 80s operational amplifier documentation. The circuit applies to any...
We found this circuit in a 1981 publication. Its purpose is to measure resistances of very low...
According to its author, this device indicates the amount of force applied to the sensors. The...