Public Address (PA) Electronic Circuits

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Public Address (PA) Circuits
Last Updated on: Monday, October 03, 2011 06:07 PM

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

30hz to 90hz Adj P.A. Driver - (circuit / schematic design added 6/06)

Direct Injection Box for Recording & Psystems - passive and active DI-box designs (added 4/02)

3 input supply powers 3.3V Portables - 04/13/95 EDN-Design Ideas....The single-ended primary-inductance converter in Fig 1 accepts input voltages ranging from 3 to more than 6V and produces a regulated 3.3V, 200-mA output. The converter accepts an input voltage from three sources a 5V dc wall cube, a three-cell AA battery, and a lithium backup battery.... [Design Idea by Len Sherman, Maxim Integrated Products, Sunnyvale, CA]