This pin can be used to restart the 555 timer's This may be an LED, in the case of a 555 timer LEDĤ is the reset pin. This is an active low input, just like the trigger input. Must be connected to the supply voltage of the 555 timer to operate. This capacitor serves to level out any fluctuations in In most 555 timer circuits, this pin is simplyĬonnected to ground, usually through a small capacitor, about 0.01 It is momentarily grounded, the 555 timer's operation is interruptedĪnd won't start again until it's triggered again via pin 2.ĥ is the control pin. The power supply voltage that might affect the operation of the timer. Some circuits (though rare) do use a resistor between the control pinĪnd Vcc to apply a small voltage to pin 5. Threshold voltage, which in turn changes the timing interval. The purpose of this pin is to monitor the MostĬircuits do not use this capability, though.Ħ is the threshold pin. Voltage across the capacitor that's discharged by pin 7. In most circuits, pin 7 is connected to the supply This pin is used to discharge an externalĬapacitor that works in conjunction with a resistor to control the Voltage reaches 2/3 of the supply voltage (Vcc), the timing cycle ends,ħ is the discharge pin.
0 kommentar(er)
