This highly sensitive light sensor was found in a 1970 General Electric documentation. The circuit can use the 2N2646 for the UJT and the phototransistor can be of any type.
The purpose of this game obtained in a 1998 documentation is to guess the number that the circuit...
This circuit is from the 2005 Linear Technology Application Manual. The circuit must be powered by 5...
This circuit generates excellent sinusoidal signals and has the frequency adjusted by VR1 which is...