Abstract: A support apparatus in the nature of a mattress comprises means defining an array of pressure points for the application of pressure to parts of a human body resting on the support member. The means defining the array of pressure points are connected together to form a layer which is covered by a cover. The pressure points are preferably defined by bead members and the support apparatus is advatangeously flexible. Additionally, a cushioning layer may be added beneath said layer to provide a restoring force delivering a somewhat gentler massaging effect at the pressure points.

Abstract: A circuit 10 for supply a fluorescent tube 12 comprises a power supply 14 which modulates the mains supply at 24 to produce a DC supply at 16. A relay J and a switch S2 apply the DC supply to a terminal 38. The power supply 14 also supplies a charging current at 30 to a battery pack 32. The supply at 38 powers an oscillator circuit 18 which incorporates inductors L1, L2 which are windings on a transformer 20. A secondary winding 22 taps the transformer 20 to supply the tube 12. A third winding L3 detects the voltage being applied to the tube 12 and a feedback circuit 40 controls the output amplitude of the oscillator 18 in order to maintain a constant supply voltage to the tube 12.