Electronics
- 402
- Tektronics Application Notes and Technical Documents
- Application notes and technical documents from Tektronics: test and measurement, communications, video test.
- 404
- Duncan's Amp Pages
- Resources for vacuum tubes. A data sheet data base for tubes. SPICE models for vacuum tubes, and software available for download.
- 405
- Frank's Electron Tube Pages
- Vacuum tube, vintage radio and other electronics information. Tube data sheets and pinout.
- 407
- RadioPistoia by Pierluigi
- Audio tube amplifier project. European tube number guide. Links to other tube sites. [English, Italian]
- 409
- Shortwave Transmitter Tubes
- A service from TDP with links to and information about the manufacturers, rebuilders and distributors/suppliers of tubes. An extensive list of data sheet sources.
- 413
- Voltage Drop Calculation
- Wire calculator based on voltage drop according to National Electrical Code.
- 415
- Sagantec
- The EDA solutions enable a dramatic shortcut in the implementation of custom, analog and mixed-signal circuits in new silicon technology.
- 416
- Xyalis
- Developer of a suite of IC layout finishing tools for 32bit and 64bit platforms. Includes product descriptions and screen snapshots.