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.
This circuit has some differences from the conventional types of control in which the delay in the...
A stereo digital mixer using the 4053 is built as shown in figure bellow. The IC must be powered...
This circuit is from a Harris Semiconductor datasheet from the 80s. However the circuit can be...