Calculators
![](/thumbs/regulator.jpg)
Voltage and current regulator calculator
Given the values of both resistors and the type of regulator, calculates the output voltage or current of a linear regulator, both in voltage and current regulation mode.
![](/thumbs/555.jpg)
Timers using 555
Calculates the times when using a 555 IC as a monostable or astable.
![](/thumbs/timer.png)
Timer overflow calculator
Given a timer configuration, it calculates how often it will overflow.
![](/thumbs/resistor_code.jpg)
Resistor value calculator
Given the color bands of a resistor, calculates its value and tolerance.
![](/thumbs/voltage_divider.jpg)
Resistive divider calculator
Given the value of two series resistors and an input voltage, it calculates the output voltage of a resistive divider.
![](/thumbs/rc_filter.jpg)
RC filter calculator
Given the values of the resistor and capacitor, calculates the cutoff frequency of an RC series passive filter.
![](/thumbs/led_resistor.jpg)
LED resistor calculator
Given the type of LED and the voltage of a power supply, calculates the required resistor to connect it.
![](/thumbs/capacitor_code.jpg)
Capacitor value calculator
Given the number found in a capacitor, this page calculates its value, as well as the tolerance.