LINEAR POWER SUPPLY (JPG)
The Goodwill GPC3030D power supply is an example of a linear power supply. Discoveries that were made in researching this power supply are things such as if a transformer is present within the PSU then the PSU will most likely be large, vice versa if a transformer is not present. With a transformer present, then almost any voltage can be obtained, whereas if one was not present, then the PSU can only obtain a voltage no higher than the input voltage applied. And if the PSU is unregulated, the voltage will vary according to the load.