Abstract: A method of treating animal tissue with a time-varying, magnetic field and a device for producing such a field wherein a substantially unipolar, rectangular electro-magnetic treatment signal having pulses of a predetermined frequency and amplitude is generated. The signal is transmitted to a coil wherein it induces a magnetic flux. The magnetic flux so produced is applied to a treatment site to promote healing of tissue. A biasing circuit is provided in the device to prevent the occurrence of a reverse polarity pulse upon the fall of the magnetic flux induced by the fall of the generated pulse and to diminish high frequency ringing at the beginning of a treatment signal.

Abstract: An FM antenna for use with a radio receiver which features plural, elongate open loop reception elements which are mutually coupled to one another. These elements may be equidistantly arranged about and spaced from an axis generally parallel with the element sides. The antenna is particularly effective for receiving weak and/or distant FM signals.