Abstract: A safety device (10) for securing dual adjacent cabinet doors, each having a door handle or door knob. The safety device (10) is made of a single rigid rod (10a) made of substantially inflexible, durable material, forming an elongated arm (11) with perpendicularly depending legs (12, 13) with tip ends (12b, 13b) covered by resilient enlargements (14, 15).

Abstract: A matching network matches an output impedance of a generator with an input impedance of a load. The matching network includes a first variable impedance element, a second variable impedance element, a reflected power detector and a control circuit. Each of the first variable impedance elements are constructed using magnetically saturable reactors. For example, each magnetically saturable reactor may be a transformer composed of primary and secondary windings wound around a non-linear ferromagnetic core. The reflected power detector detects power reflected from the matching network to the generator. The control circuit receives from the reflected power detector a signal which represents the changes in reflected power. Using this feedback the control means varies the impedance through the first variable impedance element and the second variable impedance element until the reflected power is negligible.