All items tagged with Portable and Design (4)

| The voltage step-up converter described in this article is a transformerless design based on just one integrated circuit and a handful of...

| This inexpensive oscilloscope can be used at frequencies up to 20-30 kHz (optionally up to 1 MHz). It works from 12 V and can thus be use...

| This transceiver was designed in response to a need for a simple, easy to build, self-contained radio for use through the loeal 23-em (...

| The starting point for this design is the well-known 5/8-lambda whip antenna with base coil as used for mobile communications in the 2-...