Materials.
NE555 Integrated Circuit
Resistor 100 kOhms
01 uF diode.
100 uF diode.
330 resistor.
LED diode.
Resistor 100 kOhms
01 uF diode.
100 uF diode.
330 resistor.
LED diode.
The Schematics.
The Calculations.
The circuit's ruled by the equation:
T = 1.1 * R1 * C1
Where:
T = Time you want the circuit to stay ACTIVE.
R1 = Value of the variable resistor.
C1 = Value of the variable capacitor on the circuit.
NOTE. Remember the circuit gets activated when pin 2 gets LOW level, that is, when current stops flowing from that pin either due to a switch or another circuit.
T = 1.1 * R1 * C1
Where:
T = Time you want the circuit to stay ACTIVE.
R1 = Value of the variable resistor.
C1 = Value of the variable capacitor on the circuit.
NOTE. Remember the circuit gets activated when pin 2 gets LOW level, that is, when current stops flowing from that pin either due to a switch or another circuit.