This circuit was suggested by Motorola in a 1969 publication. It makes use of components of the time, but both the FET and the bipolar may be general purpose current types.
This circuit is from an English publication of 1991. With it you can use a common multimeter on...
This circuit can be found in a 1970 Motorola documentation. The circuit can be implemented with general...
Delayed Pulse Generator This can be considered an "advanced" application where two 555 integrated...