We found this circuit in a 1996 publication. Equivalent components can be tried, especially in the case of the photodiode. The circuit is powered by a 12 V source.
This circuit was found in an old Poptronics but is still current as transistors can be replaced...
This circuit generates a multiple Inal with 3 outputs and whose frequency depends on the values of the...
We found this circuit in a documentation on active filters from 1977. The gain of this circuit is...