This simple alarm timer circuit is made with 4060 which has an integrated oscillator with a good stability with a relatively wide frequency range. In the circuit diagram the oscillator frequency is ...

Finally, the test values indicated in the infrared barrier alarm circuit diagram are average dc levels measured with a DVM, under light/no light conditions. In fact, most test points carry rectangular ...

Symbols are used to create circuit diagrams. These diagrams help us visualise ... Let’s finish off with the buzzer, to make some noise! But we need the power to flooowww – let’s join it ...