Potential error in the design/specifications

[DBoulanger]

Hi Giorgos,

As I was searching for a "555 based Missing pulse detector" circuit, I saw the one you have in your "Theory / 555 Circuits" section.

The concept is identical to quite a lot of other ones on the net, however you're suggesting NPN transistors while the diagram is showing a PNP type transistor.

Take a few seconds to correct the situation and avoid errors.

Have a nice day.

[kam]

thank you