Electronics Infoline Web

Buffer Hardware for xoscope

This circuit is a buffer between oscilloscope probes and sound card. It provides amplification and protection against high voltage input signals.

http://xoscope.sourceforge.net/hardware/hardware.html

Buffered Headphone Driver/Preamplifier

With a fast Motorola buffer as its only active circuitry, this design specifies the highest quality parts and careful construction to avoid signal coloration. The author includes instructions for substituting other buffer ICs.

http://headwize.com/projects/showfile.php?file=pawliw1_prj.htm

Buffered op amp

http://margo.student.utwente.nl/el/audio/audbuf.gif

Buffered op amp circuit.

http://margo.student.utwente.nl/el/analog/audbuf.gif

Bug Detector with Beep

http://www.uoguelph.ca/~antoon/circ/bugbeep.htm

Bug Zapper

http://www.web-ee.com/Schematics/Bug_Zapper/zapper.htm

Build a 2 Meter DDRR for Mobile

An antenna for 2 meters FM (146-148 MHz), vertically polarized, and omni-directional.

http://www.antennex.com/preview/2mddrr.htm

Build a 2-Meter Duplexer

This is a quarter wavelength resonator based duplexer design.

http://www.repeater-builder.com/rbtip/2mduplexer.html

Build a 5 watt, 80 meter QRP CW Transceiver

http://www.rason.org/Projects/rose80/rose80.htm

Build a 5W 40 meter Transmitter

http://www.rason.org/Projects/transmit/transmit.htm