Found in 1969 Ferranti documentation, this small font is characterized by its low ripple. Transistors can be common for general use, due to the low operating current.
This low voltage lamp flasher can be powered from 12 V supplies. Frequency is adjusted by P1 and...
The transistors in this circuit, found in an American publication in 1975, can be replaced by...
This circuit, from an old publication, can also use modern transistors. Note that the unit is...