All posts in the 'Oscilloscope projects' Category
Posted on 23 Jul 2008
The result summarized on this web page is a fully functional (memory)scope that samples the analogue input signal and subsequently displays it on a normal TV. Unfortunately the µSCOPE works only on 625 line PAL standard TVs, and It was never the intention to build a sophisticated measurement instrument. Nevertheless, signals up to a few kHz are reasonably well displayed by this simple circuit that can be build for only a few euro.[more]
Posted on 13 Jun 2008
It uses a matrix of 100 LED’s for a display, and does suffer from being slow and having rather poor resolution. Still we could display a sine wave running at 500Hz without trouble, that that’s not all that dissimilar to commercial solid state osscilloscopes.The circuit displays an understanding of the mechanics of displaying an analogue waveform. The timebase is simply a 555 generating a horizontal sweep, while the vertical amplifier is 3914 with a trimpot on the front. It’s extremely simple, but it works. [more]
Posted on 18 May 2008
his is a student project from Cornell University.It designed by Reid Gurnee.He writes:
My senior project is to design and build a digital oscilloscope for Professor Land. This project involves a number of design challenges. On the analog side, I need a fast, low noise A/D converter. In addition, the circuit requires a -20V bias from a 5V supply. In the realm of digital, it involves interfacing two micro-controllers with each other, an LCD display, and an analog to digital converter. With such a broad range of challenges, I searched for help from my professors and contacts I made on the web. I was successful in getting help on floating point arithmetic for an 8 bit micro-controller and LCD interfacing.
Posted on 18 May 2008
In this article a simple and inexpensive LCD oscilloscope to be used as a display for the spectrum analyzer will be presented. Although a small LCD screen is unable replace a good analog oscilloscope, a LCD may be very useful in field measurements under strong daylight conditions, for battery operation or simply when the available oscilloscope is required for a different measurement at the same time. [more]
Posted on 12 May 2008
Wilson writes:This oscilloscope uses a 1-inch diameter Mullard DH3-91 CRT. I found it at a car boot sale, priced ฃ1. I’m ashamed to say I didn’t recognise what it was: I only bought it because it looked wierd and interesting! Ian did the main design and prototype work on the ’scope, then I rebuilt it with a PSU and front panel controls, and packaged it nicely. Click here to read about Ian’s prototype. The size of this oscilloscope is 164 x 83 x 83mm (6.5 x 3.25 x 3.25 inches).[more]
