We found this circuit in an English publication from the 1980s. The circuit uses current components and can be tuned for frequencies between 300 and 1500 Hz.
This circuit generates pulses whose frequency depends on C1. The circuit can be powered by...
This excellent 30 W tube amplifier appeared in the April 1963 Radio Electronics magazine that...
This oscillator circuit with the TLV2474 was obtained from a Texas Instruments Operational Amplifier...