This is one of the many 555 based car alarm circuits that we have on our website. We found it in a 90’s American documentation. The circuit has double timing.
This circuit was found in the March 1992 issue of Radio Electronics magazine. The circuit has...
This circuit was found in Motorola documentation from 1969. The transistors are from that time. The...
This circuit was found in a 1991 publication. The transistor can be a general-purpose type....