Found in Popular Electronics from the 90s, this circuit generates signals in a frequency range set to R7 and basically determined by C1. Operational and equivalent transistors can be used.
The gain for this circuit is given by the ratio between R2 and R1. The circuit is suggested by...
The circuit suggested in a 2009 documentation serves as support for the technician who works in...
a We find this circuit which has a traditional configuration in a 1988 publication. The circuit is...