This circuit was found in a 1969 Mullard documentation. Used transistors can be replaced with modern equivalents. Output transistors may be BD135 and 136 with heatsinks.
The circuit is from an old American publication. We can mount it with the BC548 and TIP31. The...
This circuit can generate signals in the audio range between fraction of hertz up to approximately 10 kHz...
This multivibrator circuit was published in the September 1951 Radio Electronics magazine....