A Decimal to BCD Decoder - This is a keypad circuit that will convert the decimal value of any keypad switch - into
its BCD equivalent. . . . [Ron J.'s circuit]
ADC-to-PC interface transfers data in nibbles - 12/09/99 EDN Design Idea The circuit in Figure 1 uses a Centronics printer port to
interface an eight-channel, 8-bit ADC to a PC. The circuit cutscost of addressing and decoder circuitry and
saves one expansion slot for interfacing. The design uses thr. . . [by DS Oberoi, Jammu, India]
CA3090 Stereo Decoder - Stereo Multiplex Decoder. . .
Decoder - . . .
Circuit forms satellite-dish command decoder -
03/04/04 EDN Design Idea By decoding the commands sent by a direct-broadcast satellite receiver that uses
the DISEQC (digital-satellite-equipment-control] protocol, you can troubleshoot the commands or simply listen
in. Eutelsat Corp (www. eutelsat. com] offers. . . [by Mark Giebler, Oakdale, MN]
Closed-Caption Decoder - This is a closed-caption decoder with serial output based on a Microchip PIC16F628A. The
internal comparators of the PIC16F628A are used to implement a peak detector and data slicer. . . [The
hardware was designed by Richard Ottosen, and the firmware was written by Eric Smith]
Code Hopping Decoder Using a PIC16C56 - AN661 - Technology Inc. . . . [Microchip App Note last updated on 23-May-11]
Composite-VGA encoder/decoder eases display upgrade - 09/28/06 EDN Design Idea Upgrade an RGB video system without adding cables. . . [by
lights the way - 02/19/09 EDN Design Idea A
two-line-to-four-line decoder indicates status even when both signal lines lose power. . . [by Jean-Bernard
Guiot, Mulhouse, France]
Decoding 4 buttons with 2 I/O pins
(Controllers with tristate I/O ports) - Just the
solution for AVR applications in which I/O is tight, such as the ATtiny12. This should work well on other
kids of controllers that have independently controlled I/O direction registers, such as PIC and 6805
controllers. . . . [From Dick Cappels' project pages]
Surround Sound Decoder for Audio Realism - This file
contains many designs, please scroll to locate this circuit. . . . [Analog Devices-Analog Dialogue by
Encoders and Decoders - Selector guide ~ links to pages that tell why you need Encoder and Decoder ICs in your
Wireless system. Application circuits. . . . [free schematic from Golab.com]
FM stereo decoder - Schematic only, no circuit description. . . [Designer's name not given]
Hints and kinks for USB decoding - 02/07/02 EDN Design Idea The USB is a serial data-transmission system that uses cables
to connect peripheral equipment to PCs. All new computers have two orUSB receptacles, and the predictions are
that they will replace most of the legacy receptacles on old. . . [by Bert Erickson, Fayetteville, NY]
HP48SX IR DECODER - . . .
Improved PL Tone Decoder - A significant amount of interest has been generated since my last article on a PL tone
board. Because of this interest I decided to improve on the old PL tone design. Figure 1 is an inexpensive PL
tone generator with significantly improved performance. It has a much more stable tone frequency as well as
the elimination of the loading problem on the output. The transistor used in the old circuit would cause the
tone frequency to change at high levels. This month's circuit eliminates all those problems. . . [Radio
Amateur Society of Norwich]
LFSR provides encryption - 09/13/01 EDN Design Idea
LFSRs (linear-feedback shift registers] find extensive use in cryptography. For example, the cryptographic
algorithms in the GSM (Global System for Mobile communications] mobile-phone system rely on the use of LFSRs.
An LFSR comprise. . . [by Antonella Di Lillo and Giovanni Motta, Brandeis University, Waltham, MA]
LM1310 FM Stereo Decoder - Converts your mono FM Receiver to
Stereo. . .
LM1800 Stereo Decoder - Stereo Demodulator (circuit
added4/02) . . .
Demodulator - Phase-Locked Loop FM Stereo Demodulator.