| 摘要 |
The invention relates to a portable apparatus for protection and therapy with electromagnetic fields, in very low frequency pulses. According to the invention, the apparatus comprises a quartz oscillator (Q1) piloted by a micro controller (CI1) which automatically scans a plurality of frequencies, such as 21, in the range of 7...11 Hz, generating a rectangular signal which is sent to a coil (L1) by means of a resistor (R1) and a transistor (T1), a diode (D1) providing protection of the transistor emitter-collector junction. |
