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ISSUE DATE: OCTOBER 23, 1997 OPTIONS
Audio controllers, LDCs, Digital TV, PC video, PFM converters, LAN/WANs, WESCON, ITC

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October 23, 1997 - In This Issue

[Ideas For Design]
Create a quiet −5 V supply for 14-bit ADCs
Many high-performance data-acquisition systems reap multiple benefits when using ±5-V supplies rather than a single 5-V supply. These benefits include the ability to handle larger signal magnitudes than is possible with a single 5-V supply. This...  — Contributing Author

[Ideas For Design]
Logic power drives high-intensity LEDs
Driving high-intensity LEDs in series ensures uniform brightness, but that approach typically requires a supply voltage greater than the total forward voltage across the LED string. A switch-mode boost converter can efficiently drive the LED string...  — Contributing Author

[Ideas For Design]
LM/MW converter for ham-only receivers
Before the advent of broadband communications receivers with synthesized oscillators, high-grade, hamband receivers used crystal oscillators and a variable IF to cover relatively narrow (500-600 kHz) frequency segments. The schematic shows a circuit...  — Contributing Author

[Ideas For Design]
Circuit allows accurate sync of multiple CCTV signals
There are times when CCTV sync signals must maintain temporal fidelity when derived from composite video. One such case involves applications in which several video sources are polled by an instrument which then extracts photometric data from video...  — Contributing Author





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