Circuit diagrams and schematics - Electronic projects

This is circuit Digital One-Shot, use IC TTL Digital 74LS02 : QUAD 2-INPUT NOR GATE . Time Output = 0.8xRxC Related Links More digital circuit More digital circuit More one shot More circuit nand-gate More Gate circuit More OR Gate More comparator circuit More about interface circuits More circuit about toggle flip flop CMOS Toggle [...]

The two circuits below illustrate using the 555 timer to close a relay for a predetermined amount of time by pressing a momentary N/O push button. The circuit on the left can be used for long time periods where the push button can be pressed and released before the end of the timing period. For [...]