This circuit was found in an ancient American documentation. With it is possible to double the frequency of a transmitter For the range of 6 meters obtaining 8 W. The circuit makes use of varicap.
Found in 1980s documentation, this amplifier uses a symmetric source and the gain is given by the...
The MAX14690 evaluation kit, a solution Maxim for battery charge management in wearables, can be...
The circuit presented is from the Linear Databook of Motorola of 1990. With it we emulated a NOR gate...