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.
Timers using 555
Calculates the times when using a 555 IC as a monostable or astable.
Timer overflow calculator
Given a timer configuration, it calculates how often it will overflow.
Resistor value calculator
Given the color bands of a resistor, calculates its value and tolerance.
Resistive divider calculator
Given the value of two series resistors and an input voltage, it calculates the output voltage of a resistive divider.
RC filter calculator
Given the values of the resistor and capacitor, calculates the cutoff frequency of an RC series passive filter.
LED resistor calculator
Given the type of LED and the voltage of a power supply, calculates the required resistor to connect it.
Capacitor value calculator
Given the number found in a capacitor, this page calculates its value, as well as the tolerance.