POWER SUPPLY SOURCE FOR MAGNETRON Russian patent published in 2015 - IPC H05B6/68 

FIELD: electricity.

SUBSTANCE: invention relates to the sphere of electrical engineering. Power supply source (1) for magnetron has direct-current voltage source (2) and high-voltage converter (3). Voltage source is fed from the mains and supplies direct voltage smoothed by capacitor (4) through the line (5) to converter (3). The latter supplies switching alternating current to transformer (6). The transformer supplies alternating current of higher voltage to rectifier (7), which, in its turn, supplies the magnetron with high supplying anode voltage through the line (8). Direct-current voltage source has inductance coil (22), which is re-switched by transistor switch (23) under control of the integrated circuit (24). The above inductance coil allows the voltage source supplying with variable direct-current voltage. Input voltage (25) is provided for rectification of the mains voltage. Output voltage of the voltage source is monitored and supplied back to the integrated circuit by voltage divider (26). Feedback voltage is varied as required in order to control the required voltage application to converter (3) of the control circuit (27). The control circuit comprises transistor (31), to which base reference voltage is supplied through the line (32). Its collector is joined to the common point of the voltage divider (26), which is the feedback point. Emitter is coupled to output of the operational amplifier through resistor (33).

EFFECT: improved efficiency.

11 cl, 1 dwg