This circuit is from a 2004 documentation serving for signals from 1 MHz to 160 MHz. The antenna is of the telescopic type and the analog instrument is of the type found in old sound equipment.
We can obtain the voltage multiplication using all six inverters of a 4049 integrated circuit, as...
Found in a 1970 documentation this circuit makes use of components still common in the market. The...
In the figure we have a source suggestion for the bench with several outputs that can be used...