Voltage Regulator
Voltage Regulator Complete Educational Simulator
A complete interactive simulation of transformer, rectifier, filter, regulator, and load.
What is a Voltage Regulator?
A voltage regulator is an electronic component or circuit that gives a stable output voltage even if the input voltage changes. It helps protect circuits from overvoltage, ripple, and unstable power.
78XX Series
Positive fixed-voltage linear regulators. The last two digits show the output voltage. Example: 7805 = +5V, 7809 = +9V, 7812 = +12V.
79XX Series
Negative fixed-voltage linear regulators. Example: 7905 = -5V and 7912 = -12V. These are used when a circuit needs a negative supply.
LM317
Adjustable positive linear regulator. You can set the output voltage with external resistors. It is commonly adjustable from about 1.25V up to 37V.
Output Voltage: 4.68V
Efficiency: 45%
Heat Loss: 66.6%
Ripple After Filtering: 0.2V