This circuit generates sinusoidal signals between 300 and 3000 Hz. We find a 303 Circuits from the 90's. The operational ones are types with FET. The power supply must be symmetrical.
We found this circuit in a Hands On Electronics from the 90s. However, the circuit can still be...
We find this efficient emergency lighting system in a 1987 publication. The circuit keeps a...
This circuit was obtained from a Linear Technology manual from the 1990s. The sensor is of the...