Found in a 1968 publication, this circuit generates signals with the waveforms shown next to the diagram. Modern equivalent transistors can be used.
This amplifier for effects on musical instruments can be mounted with BC549 transistors. The...
We found this circuit in documentation from National Semiconductor. For the medium wave range the...
According to what is said, the bugs are the female insects (mosquitoes, muriçocas and others)....