The circuit presented is from the Motorola Linear Databook of 1990. The integrated circuit is a transconductance operating and the power supply need not be symmetrical.
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...