CONSTANT CURRENT SUPPLY Russian patent published in 2007 - IPC G05F1/56 

FIELD: electric engineering, possible use for powering radio-technical devices as a device for charging accumulators, for example, of railroad trains.

SUBSTANCE: constant current supply (fig. 1) contains first input clamp (1), connected to upper plate of first capacitor (2) and power input of transistor key (3), power output of which is connected to first contact of diode (4) and to first contacts of throttle (5) and throttle (6), second contacts of which through diodes (7) and (8) are connected to upper plate of capacitor (9), to first contact of current indicator (10) and, through resistor (11), to first input of control block (12), second input of which is connected to second contact of indicator (10) and to first output clamp (13), first output is connected to controlling input of transistor key (14), and second output is connected to controlling input of transistor key (15), where second input clamp is connected to lower plate of capacitors (1) and (9), to second contact of diode (4), to power outputs of transistor keys (14) and (15) and to second output clamp (17). Power input of transistor key (14) is connected to third contact of throttle (5), and power input of transistor key (15) is connected to third contact of throttle (16). Outputs of control block (12) are also connected to inputs of logical element OR (18), output of which is connected to control input of transistor key (3).

EFFECT: increased efficiency and quality of output voltage.

6 cl, 8 dwg