Voltage regulated lamp PUBLIC

Using a 7805 to convert 24V DC into 5V DC.

The 78xx series of linear voltage regulators are a simple way to convert an unregulated high voltage supply (e.g. with ripples due to filter capacitors charging and discharging) into a lower voltage regulated supply. In this case, a 7805 is converting 24V DC into 5V DC.

However, linear regulators like the 7805 drop the voltage by dissipating the excess which is wasteful. Today, most power supplies are switch mode to avoid this problem and squeeze a higher power supply into a smaller space with less bulky components like large low-frequency transformers and large filter capacitors.