/Schematics/Timer-circuits

Title Short description Rate Download
Digital timer ON-OFF or OFF-ON timer with time period choice. 2.86 7,667
Three timers Three timer circuits. 2.94 7,119
Time switch Time switch. 2.87 6,983
Programmable time switch Programmable time switch. 2.82 5,746
10 minute timer 10 minute timer with NE555. 2.84 5,125
Darkroom timer for PCB exposure Excellent darkroom timer for PCB exposure based on ATtiny2313 and 7-seg. LED displays. 2.90 4,810
Digital stopwatch Digital stopwatch. 2.87 3,788
Delayed switch A simple delayed switch. 2.89 3,496
Fast turned-on/delayed-off relay Fast switch with delayed off. 2.81 3,040
Long delay generator Uses binary counter and low frequency osc., it can make a few hours delay. 2.86 1,004

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