An electronic system (11) that is activated by electrical energy for use in inhibiting the growth of cancer cells or their proliferation in a warm-blooded mammalian subject, comprising: one or more energy generating circuits (29) Low energy electromagnetic to generate one or more high frequency carrier signals, one or more data processors or integrated circuits (21) that comprise or communicate with one or more generator circuits (29) and that are to receive the control information of a control information source that is an application storage device or a computer (52), said one or more generator circuits (29) include one or more generators (34) of amplitude modulation control signal for controlling the variations of the modulated amplitude of one or more high frequency carrier signals, said one or more generating circuits (29) also include one or more frequency control signal generators (21) with programmable amplitude modulation to control the frequency at which amplitude modulations are generated, the system (11) also comprises a connection or coupling position (12a) for the connection of a electrically conductive applicator (12, 13), said one or more programmable frequency control generators (31) with amplitude modulation are adapted to precisely control the frequency with amplitude modulations with an accuracy of at least 1000 ppm with respect to at one or more frequencies with amplitude modulation determined or predetermined reference selected from a range of 0.01 Hz to 150 kHz. and characterized in that said source (52) of control information includes frequency control information with amplitude modulation comprising at least 50% of the frequencies with amplitude modulation listed in any of paragraphs 1 to 17 , given below, the applicator (12, 13) is adapted to apply by contact or induction by proximity to the warm-blooded mammalian subject one or more low-energy emissions of modulated amplitude with a frequency controlled by a program that results in low abs
