This circuit was obtained in a 1964 Electronic Design. Equivalent modern transistors can be used. The circuit requires a 6 V symmetrical power supply.
An excellent low frequency sine signal is produced by this oscillator. The frequency is determined by the...
Using the 4046 PLL integrated circuit, this circuit generates signals from 60 Hz to 1.4 kHz via...
This circuit of the 70's uses transistors of the time. The circuit can amplify signals from 10 Hz...