H03F9/00 - CPC Classification Index

ClassID:

219506 ⎘

H03F9/00 - CPC Classification

Classification description:

Magnetic amplifiers

Sub-classes:

H03F9/02 » current-controlled, i.e. the load current flowing in both directions through a main coil 4
H03F9/04 » voltage-controlled, i.e. the load current flowing in only one direction through a main coil, e.g. Logan circuits 4
H03F9/06 » Control by voltage time integral, i.e. the load current flowing in only one direction through a main coil, whereby the main coil winding also can be used as a control winding, e.g. Ramey circuits 0

Recent Application in this class:

20190181818

Magnetic operational amplifier

20130284430

System for heating a hydrocarbon resource in a subterranean formation including a magnetic amplifier and related methods

20100321106

AMPLIFIER

20100020987

Signal absorption induction circuit

20090154732

Audio playing module and method of the same

20060235281

Wireless patient monitoring system

13891787

High temperature magnetic amplifiers