This circuit was found in Radio Electronics magazine from October 1964. The circuit uses two transistors of the time that require a supply voltage of 9 V. Consumption is 2.5 mA.
This flasher with a well-known configuration was suggested by a 1977 publication by Radio Shack. The...
In the figure we have a practical idea for using the good junction of a partially burned...
The CMOS TLC555 [equivalent to the bipolar 555] can be used as a monostable in the configuration...