This circuit is from a 1964 Electronic Design. The transistors are from that time. They can be replaced by current equivalents.
This is a basic astable circuit using the 555 IC and driving two LEDs. The phase on a rate giving...
Originally this circuit is from an English magazine, but I found it in Argentina's Radio Chassis...
August 2016 - It can be obtained from Mouser Electronics Mikromidia of the MikroElektronika...