This timer was found in English documentation from the 80's. The integrated circuit is common nowadays and the MOSFET admits equivalent according to the controlled load.
This circuit has the muting action delayed by the action of C5. The circuit is from the SGS linear...
This circuit was found in the November 1959 Radio Electronics magazine; The circuit generates a...
The integrated circuit used in this detector is uncommon today. We found it in a documentation from the...