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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] |
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Composite VGA encoder/decoder eases display upgrade - 09/28/06
EDN-Design Ideas.....Upgrade an RGB video system without adding cables..... EDN is
migrating links. This link is not verified. Search the "title" + "EDN" for new
link. |
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Decoder lights the way - 19-Feb-09 Issue of EDN A
two-line-to-four-line decoder indicates status even when both signal lines lose
power..... [Design Idea by Jean-Bernard Guiot, Mulhouse, France] |
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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] |
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FM stereo decoder - Schematic only, no circuit description |
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Hints and kinks for USB decoding - 7-Feb-02 Issue of EDN 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 older
PCs. The 1.0 and 1.1 standards for USB were for 1.5 and 12 Mbps at low- and
full-speed rates, respectively..... [Design Idea by Bert Erickson, Fayetteville,
NY] |
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HP48SX IR DECODER - (electronic design added 6/07) |
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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] |
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LFSR provides encryption - 13-Sep-01 Issue of EDN 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 comprises a register
containing a sequence of bits and a feedback function..... [Design Idea by
Antonella Di Lillo and Giovanni Motta, Brandeis University, Waltham, MA] |
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LM1310 FM Stereo Decoder - Converts your mono FM Receiver to Stereo
(circuit added 8/06) |
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LM1800 Stereo Decoder - Stereo Demodulator (circuit added4/02)
|
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LM1800 Stereo Demodulator - Phase-Locked Loop FM Stereo Demodulator
(circuit added 8/06) |
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Manchester Co Decoder Fits into 32 Macrocell PLD - 01/06/00 EDN-Design
Ideas.....Manchester encoding is common, and this scheme erases the dc-spectrum
component present in an NRZ signal in baseband transmissions. An important
application is in Ethernet-interface adapters, in which several kinds of
media-attachment units interfac..... EDN is migrating links. This link is not
verified. Google the "title" EDN for new link. |
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MicroController Visualizes Hex Code - 04/27/00 EDN-Design Ideas.....In C
systems, information exchanges usually use the hexadecimal 1-2-4-8 format; output
data also appear in this format. Reading the hex code is not a problem; several
LEDs connected to the output lines can display the answer. The problem arises when
you w..... EDN is migrating links. This link is not verified. Search the
"title" EDN for new link. |
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NTE789 Stereo Decoder - The NTE789, a monolithic silicon integrated
circuit, is a stereo multiplex decoder intended for FM multiplex systems.
This stereo multiplex decoder requires only one low–inductance tuning coil
(requires only one adjustment for complete alignment), provides automatic stereo
switching, energizes a stereo indicator lamp, and operates from a wide range of
voltage supplies. ….(design added 11/08) |
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PAiA: How MS Stereo Decoder works - The schematic diagram of the MS
Decoder may look complicated but is actually quite simple. Both the Mid and Side
signals are initially …. (Circuit design added 07/07/07) |
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Phototimer Controls Load - 04/18/02 EDN-Design Ideas.....In industrial
and home applications, the need sometimes exists for a device that, after
activation by some physical effect, such as light, temperature, or sound, switches
a load on for a predetermined time. The load, such as a lamp, motor, solenoid, or
heater, usually derives its power from the ac line..... EDN is migrating links.
This link is not verified. Search the "title" + "EDN" for new link. |
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PL Tone Encoder Board - If your local repeater has got you singing the
PL tone blues, then read on. For less than $10, an inexpensive PL tone generator
can be constructed that will bring new life into that old non-PL rig…. [Radio
Amateur Society of Norwich] |
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Professional Stereo Encoder - Uses high quality NJM2035 stereo coder IC.
….(electronic schematic added 11/08) |
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Remote Control Encoder/Decoder with PIC16C620 & PIC12C508 - (circuit /
schematic design added 6/06) [Peter Jakab, Electrical Engineer, Engineer of
Informatics] |
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Rotary encoder mates with digital potentiometer - 6-Mar-03 Issue of EDN
In developing electronic systems, designers look for products or ideas that may
benefit from the better performance, smaller size, lower cost, and improved
reliability that an IC can offer. Toward that end, the digital potentiometer
emerged as an alternative to its mechanical counterpart, the mechanical
potentiometer..... [Design Idea by Peter Khairolomour, Analog Devices, San Jose,
CA] |
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Selective Calling Decoders - This isn't an Electronics Australia/Dick
Smith project, but if you're interested in decoding and logging the selective
calling (Selcall) and Automatic Number Indication (ANI) signals used in mobile
radio communications networks, take a look at the Anzac Comms selcall decoder
page. I (Bob Barker) did the (Zilog) microcontroller software and the PCB layouts
for them! |
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Sequential Channel Selector Simplifies Software - 01/04/01 EDN-Design
Ideas.....An efficient but powerful circuit is useful for a variety of
applications with limited I/O and for which you want to use one input to
sequentially select a different output channel ( Figure 1 ]. When the software
changes the state of only one input,..... EDN is migrating links. This link is not
verified. Google the "title" EDN for new link. |
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Simple phototimer controls load - 18-Apr-02 Issue of EDN In
industrial and home applications, the need sometimes exists for a device that,
after activation by some physical effect, such as light, temperature, or sound,
switches a load on for a predetermined time. The load, such as a lamp, motor,
solenoid, or heater, usually derives its power from the ac line..... [Design Idea
by Abel Raynus, Armatron International, Melrose, MA] |
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Simple Surround Sound Decoder - This surround-sound decoder is based on
the "Hafler" principle, first discovered by David Hafler sometime in the early
1970s. The original idea was to connect a pair of speakers as shown in Figure 1,
for use as the rear speakers in the surround setup.....(electronic design added
6/07) |
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Single Printer Port Pin Acts as an Encoder Output - 06/07/01 EDN-Design
Ideas.....Encoders and decoders are common elements in alarm, remote-control, and
measurement systems. However, most of these devices require many I/O lines when
under microprocessor or PC control. For example, the HT-12E encoder has eight
address pins, four..... [Deaign Idea by Haobin Dong, Huazhong University of
Science and Technology, China] |
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TDA1591 Stereo Decoder - Stereo Decoder with TDA1591 IC. ….(electronic
schematic added 11/08) |
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Use Your Printer Port as a High-Current Ammeter - 07/06/00 EDN-Design
Ideas.....With a few inexpensive components and INT1Ch, you can turn the printer
port of your PC into a high-current ammeter.… [Design Idea by K Suresh, Indira
Gandhi Centre for Atomic Research, Kalpakkam, India] |
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You've Got Mail - 08/19/99 EDN-Design Ideas.....Many e-mail programs
provide a "beep" or a pop-up message box signaling the user that a new e-mail
message has arrived. If you are too far from the computer to hear the audible
signal or if the monitor is turned off, then..... [Design Idea by ary Kath and
Craig Bishop, Scotch Plains, NJ] |
