Equivalent transistors can be used in this circuit for automotive applications in the 1980s. The frequency is given by the capacitor and the current of the lamp depends on the LM195 transistor.
This circuit was obtained in an old American documentation, remembering that the 566 is the double...
This circuit is from a Japanese documentation from 1971, using transistors of the time. The...
This circuit appears several times on our website and in this section, for various purposes and minor...