This circuit was found in American documentation from the 90's. The circuit applies to any operational. The power supply can be between 5 and 15 V depending on the operational.
This circuit was found in a 1964 Electronic Design. The components are from the era and the load...
This is the receiver for the previous transmitter, also using a transducer not very common in our...
This circuit was obtained in a 1974 National Semiconductor components and circuits manual. The...