This circuit was obtained in a Electronics World of 1968. The transistors can be equivalent as the BC558 for the PNP and the BD135 for the NPN powering lamps from 3 to 12 V according to the supply.
This circuit is from the Linear Applications Handbook of the National Semiconductor of 1994. The...
We found this circuit in the National Semiconductor Linear Applications Handbook of 1994. The...
This Japanese commercial medium and short-wave radio uses 7 transistors and tunes the range from...