I see that some power supplies provide a wide range of output voltages meanwhile maintaining the current.

**For example:** 2.7 A, 20-36 V output.

I understand that the voltage rate will depend on the end-unit consuming the power (eg., an LED chip).

What happens if the output from the PSU is divided into two parallel connections, one lead connected to an end-unit needing to use 27v, and another using 30v?

What happens internally? What's the reason why for the end result?

Example:

    [[80W 2.7 A PSU with 18-30 V]] |--> (21-24) V, 1 A Diode 
                                   |--> (27-31) V, 2 A Diode

How would it regulate the voltage in each case?