This circuit doubles the frequency of a rectangular signal applied to its input. The circuit has a 30 kHz input to obtain 60 kHz signals. We found it in a 1964 Electronic Design.
We can use this amplifier with low impedance headphones with good performance. Possible...
El circuito de la figura es sugerido por National Semiconductor y puede servir de base para una...
This is a basic inverter circuit for a 70 kHz crystal. We found it in an old documentation using an...