Dear Gopher, #12,To give an example of #12's lat comment, if the resistance if the load is too small, current will be extremely high and damage the devices that are regulating the voltage.
On the other extreme, some voltage regulators do require a minimum load, 10 mA for an LM317 regulator. Without that 10 mA flowing, compliance to the stated voltage is poor and gets better as the load is increased (as resistance becomes smaller).
Also, I don't think voltage source is a very good term. You should use voltage regulator. Current Source is another way to control a power to a load. In that case, source makes more sense than current regulator. Kind of an analogy to pressure regulator and flow control.
by Jake Hertz
by Jake Hertz
by Aaron Carman
by Duane Benson