Abstract: A booklet comprises a front page, a back page and a plurality of inner pages. An envelope is detachably connected to the outer longitudinal edge of the booklet's back page, and the envelope has dimensions which permit it to be folded along either the outside or the inside of the back page. The envelope may be folded inside the booklet without impairing the compactness of the booklet. No matter how the envelope is folded, there is easy access to all of the booklet pages and to the envelope. For functional reasons involving the aforesaid compactness and accessibility, the back page is indented relative to the other pages of the booklet and the front and back panels of the envelope are indented relative to the back page of the booklet. The envelope has a flap made out of material saved from the indentations.

Abstract: A self-biased MOSFET with suitably biased substrate is used as one of the rectifiers in a rectifier circuit for converting a-c power to d-c power for application to a monolithic integrated circuit of which the rectifier circuit is a part. This avoids the parasitic transistor action which would accompany the use of an isolated pn semiconductor junction, which parasitic transistor action undesirably discharges a storage capacitor connected across the output of the rectifier circuit.