This astable multivibrator was obtained from a Mullard documentation from 1960. The components depend on the used transistor and on the frequency, as shown in the table next to the diagram.
This circuit was found in old documentation, the transistor being the modern equivalent of BC548...
April 2017 - Mouser Electronics is providing Vishay's new VCNT2020 optical sensors for position...
This conventional circuit with a source adjustable to 1.5 A was obtained in a documentation...