LOWERING STABILISER Russian patent published in 2008 - IPC G05F1/565 

FIELD: electricity.

SUBSTANCE: source of p-channel pass transistor (1) with isolated gate is connected to input bus (2), and drain is connected to input of rectifier filter. Output of smoothing filter (3) is connected to output bus (4) and first output of the first resistor (5). The second output of the first resistor (5) is connected via the second resistor (6) to common bus and to non-inverting input of differential voltage comparator (7). The inverting input of differential voltage comparator (7) is connected to reference voltage source (8). The first output of condenser (15) is connected to smoothing filter (3) output, and the second output is connected to non-inverting input of differential voltage comparator (7). Output of differential voltage comparator (7) is connected with the first output of the third resistor (9), anode of diode (13) and via the fourth resistor (10) - with input bus (2). Stabilitron cathode (11) is connected to input bus (2) and its anode - to the seconf output of the third resistor (9) and cathode of the first diode from the circuit of n connected in series diodes (12) (where n=2) where anode of the last in the series diode is connected with p-channel pass transistor gate (1) (the transistor with isolated gate), cathode of diode (13) and via parallel RC-circuit (12) - with input bus (2). Smoothing filter (3) is made as LCD-filter.

EFFECT: limiting and thermal stabilisation of current; protection against inrush currents and short-circuit currents stabilisation.

3 cl, 3 dwg