We found this circuit in an old Mullard (Philips) documentation on the 555 and 556 integrated circuit (double 555). The relay must be 12 V with contacts that support the horn current.
September 2016 - Mouser Electronics already has the new TPS54335-2A from Texas Instruments...
This optical pass-through shield can be used in various applications, such as object sensing or...
This circuit was found in an Electronics World magazine from 1990. The circuit can be mounted...