In this circuit of an old American documentation, the input impedance is the same as the output impedance. The circuit has a sensitivity of 1 Vpp at 75 ohms.
This integrated generates all the higher octave frequencies of a common keyboard when a clock...
This circuit was found in a Popular Electronics from the 90s. The frequency depends on the...
This circuit can be controlled by an external signal which allows its use as a shield. The circuit...