Field effect regulator with stable feedback loop

A low loss regulator having an input terminal for receiving a predetermined input voltage and an output terminal operatively connected to a load, said regulator comprising:

• at least one field effect transistor in a source follower configuration having its drain operatively connected to the input terminal, its source operatively connected to the output terminal, providing an output voltage across the load, and a gate;
• means for comparing said output voltage to a first reference voltage and supplying a control voltage indiciative thereof to said gate, such that a change in current drawn by the load causes said means for comparing to produce a control voltage on said gate which keeps said output voltage substantially constant, said means for comparing comprises amplifier means for providing a high gain having a negative input operatively connected to the output terminal and a positive input operatively connected to said first reference voltage and an output operatively connected to said gate;
• and
• means for clamping the output current drawn by the load to a predetermined value, said means for clamping operatively connected between said output of said high gain amplifier means and said positive input of said high gain amplifier means such that when said control voltage reaches a predetermined level said means for clamping outputs a voltage which modifies said first reference voltage and thereby prevents the load from drawing current more than said predetermined value.