Test & Measurement Circuits
1. Experimental Solid-State Oscilloscope
Figure A is the schematic diagram of the experimental scope. In operation, a signal applied to the noninverting input of the 741 op amp is amplified and routed to a flash A/D converter made up of LM339 quad comparators and a 74147 priority encoder. A detailed description of this A/D converter was given in the September and October 1978 Experimenter’s Corner columns.
Fig. A Schematic of a solid-state 10-by-16 LED array oscilloscope.
The digital output of the 74147 is a 4-bit BCD nibble. This nibble, after being decoded by a 74145 1-of-10 decoder, activates one of the ...
Get Mims Circuit Scrapbook V.I. now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
