## Calculators

**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.