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.
The signal from this circuit found in a 1968 Electronics World is sinusoidal and depends on the...
Up to 4 A can be sourced by this Power supply. It can be used to power automotive appliances and...
This circuit consists of a good perfromance audio amplifier powered from two or four batteries and has...