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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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CA3090 Stereo Decoder - Stereo Multiplex Decoder |
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Caller ID Decoder |
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Circuit forms satellite-dish command decoder - 4-Mar-04
Issue of EDN By decoding the commands sent by a
direct-broadcast satellite receiver that uses the DISEQC
(digital-satellite-equipment-control] protocol, you can
troubleshoot..... [Design Idea by Mark Giebler, Oakdale, MN] |
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8-channel DTMF Link: Decoder - In the decoder designed for
the DTMF Link project a Holtek HT9170B does the main job. The
natural counterpart of the HT9200B used in the associated
encoder….must register on this site.... [Published in Elecktor
July/August 2010] |
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ADC-to-PC interface Transfers data in nibbles - 12/09/99
EDN-Design Ideas.....The circuit in Figure 1 uses a Centronics
printer port to interface an eight-channel, 8-bit ADC to a PC.
The circuit cuts cost of addressing and decoder circuitry and
saves one expansion slot for interfacing.....PDF has several
circuits, please scroll to find this one..... [Design Idea by DS
Oberoi, Jammu, India] |
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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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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 |
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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 |
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LM1800 Stereo Decoder - Stereo Demodulator |
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LM1800 Stereo Demodulator - Phase-Locked Loop FM Stereo
Demodulator |
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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. |
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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 |
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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. |
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Remote Control Encoder/Decoder with PIC16C620 & PIC12C508
- [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. |
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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.
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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] |
