limitation the ability to replace widely manufactured conventional bulbs intended for a wide range of lighting applications reductions in energy use and longer service lifetimes over the conventional bulbs can be benefits of the led par additional benefits can include better light control and reducing or eliminating damage to filter gels used a general design feature of some embodiments of the led par is such that fixtures into which it is installed require fewer modifications alterations or additional parts for full functionality fig2 25 are diagrams of example embodiments of power supply schematics these power supply schematics may be implemented in the power supply system shown in fig2 fig2 illustrates an example constant current power supply as shown in fig2 a constant current is delivered to the led module from an off line switch mode buck converter the controller sets the led current level accord to the conduction angle or u2018 on time u2019 of the power switching device in the dimmer fig2 illustrates an example emi input filter as shown in fig2 the emi input filter suppresses conducted electromagnetic noise both common mode and differential to acceptable levels for compliance with fcc part 15 as a class a device there are two u2018 lc u2019 filters in series and a u2018 rc u2019 network to reduce ringing fig2 illustrates an example multi led current divider as shown in fig2 current through multiple led elements is balanced with current mirrors that include a transistor diode network providing failsafe against an open led condition the present figure is a two led embodiment fig2 illustrates an example fan power supply with bleeder circuit as shown in fig2 power is delivered to the fan through a linear regulator.