Simple Circuit Diagram is a collection of completely free electronic circuit schematic diagrams. For each diagram, they explain the use of the circuit as well as provide in-depth explanations of all ...

"Hydraulic Schematics and Basic Circuit Design" provides an overview of basic hydraulic circuit configurations and the standard fluid symbols in fluid schematic diagrams. A hydraulic schematic diagram ...

Beeps when hears your whistle, A gadget suitable for key-holders, games etc. Some 20 years ago it was common to see small key-holders emitting an intermittent beep for a couple of seconds after its ...