Found in a 1949 Radio Electronics, this 4-tube circuit was fed directly from the mains with a half-wave rectifier.
This circuit makes use of an integrated LM2907. The circuit is from an old documentation being...
Using the 741 this circuit can be adjusted to values between 1 Hz and 100 kHz. The power supply...
The circuit shown in the figure uses the ST8R00 from ST Microelectronics which consists of a 1 A...