This simple circuit needs a high gain stage to compensate for losses. It consists of a passive tone control obtained from Electronics Today International of the 90s.
This circuit generates voltages of tens of thousands of volts for projects such as electrostatic filters...
This circuit was found in an old American documentation. The operational used is of the...
Rechargeable Nicad batteries type AA, C or D can be recharged with this circuit, which is nothing...