Depending on the components, given in the table, this circuit can amplify signals of 100 MHz or 400 MHz. The circuit is from a 80's documentation. Equivalent transistor can be used.
The circuit shown in the figure generates a rectangular signal whose frequency depends on C1. For...
This circuit suggested by Texas Instruments, operates with pulses, and is based on an operational...
This circuit captures, through a coil, the signals emitted by another coil under the mat connected to...