This circuit is from an old documentation, making use of an operational of the time. The circuit can be adapted to use modern components. The power supply must be symmetrical.
This circuit transmits signals with good power in the range of 1 to 10 MHz using only integrated...
This circuit is from 1989 documentation. The circuit is based on CMOS technology and the displays are...
We found this circuit in a Popular Electronics of the 90s. The MOSFET can be of any type,...