Circuit for reducing ripple waves and suppressing noise for adjustable precision direct current high-voltage source

Disclosed is a circuit for reducing ripple waves and suppressing noise for an adjustable precision direct current high-voltage source. The circuit is composed of a first class coupling network A, a broadband transformer B, a front power amplifier C, a broadband transformer D and a second class coupling network E. The first class coupling network A is connected with the broadband transformer B and the second class coupling network E. The broadband transformer B is connected with the front power amplifier C. The front power amplifier C is connected with the broadband transformer D. The broadband transformer D is connected with the second class coupling network E. According to the circuit for reducing the ripple waves and suppressing the noise for the adjustable precision direct current high-voltage source, an active power filter circuit with negative feedback is arranged, the ripple waves in direct current voltages and the noise in different frequency bands can be separated reliably, and various ripple waves and high-frequency noise can be offset and suppressed initiatively.