This circuit was found in 1980s American documentation. The transducer is a piezoelectric capsule and the power supply voltage can be between 3 and 18 V.
The control of the triac in this power flasher for incandescent lamps is made by a relaxation...
One pulse in the output is produce at each 5 pulses applied to the input. The circuit uses CMOS...
This circuit is from a 1978 publication, and the integrated diode bridge can be replaced by...