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 can be used as a shield as long as the power is supplied with voltage equal to that...
In the figure we have an oscillator for microcontrollers capable of operating in the frequencies of 10,...
In the figure we show how it is possible to use the 4013 integrated circuit in the monostable...