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Decoder Circuits
De-Coder Circuits:  #'s - L      M - Z

 

Last Updated: December 31, 2017 06:47 AM


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

1 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__ Circuit Design by Deaignby  Haobin Dong, Huazhong University of Science and Technology, China

2^16 remote control encoder & Decoder -  Control up to 16 remote digital output lines by this remote control encoder/decoder.  The encoder can transmit either using a radio module or an infrared LED.  The decoder outputs can be latched or momentary __ Designed by Peter Jakab

68HC11 Function Generator -  This site contains complete schematics and code for a 68HC11 based frequency counter, square wave synthesizer, sine wave synthesizer, programmable filter, capacitance and inductance meter, with a digitalker speech synthesizer output.  Project specifications are given below __ Designed by Michael Ellis

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 __ Designed by Published in Elecktor July/Augu, 2010

A Decimal to BCD Decoder -  Miscellaneous:  This is a keypad circuit that will convert the decimal value of any keypad switchinto its BCD equivalent. __ Designed by Ron J.

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.  The design uses three of  subportPDF has several circuits, please scroll to find this one__ Circuit Design by DS Oberoi, Jammu, India

CA3090 Stereo Decoder -  Stereo Multiplex Decoder __ Designed by NTE789

Circuit forms satellite-dish command Decoder -  4-Mar-04 EDN-Design Ideas 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 the DISEQC protocol.  The technique uses only the coaxial cable between the receiver and the dish to send commands for actions such as changing the low-noise-block__ Circuit Design 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 __ Designed by The hardware was Richard Ottosen, and the firmware was Eric Smith

Composite-VGA encoder/decoder eases display upgrade -  09/28/06 EDN-Design Ideas Upgrade an RGB video system without adding cables__ Circuit Design by Werner Schwiering, Joystick Scoring Ltd, Whitby, ON, Canada

Decimal to BCD Decoder -  Miscellaneous:  This is a keypad circuit that will convert the decimal value of any keypad switchinto its BCD equivalent. __ Designed by Ron J.

Decoder lights the way -  19-Feb-09 EDN-Design Ideas A two-line-to-four-line decoder indicates status even when both signal lines lose power__ Circuit Design 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.   __ Designed by Dick Cappels

Encoders & Decoders Selector guide ~ links to pages that tell why you need Encoder and Decoder ICs in your Wireless system.  Application circuits.  __ Golab.com

Hints & kinks for USB Decoding -  02/07/02 EDN-Design Ideas 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__ Circuit Design by Bert Erickson, Fayetteville, NY

HP48SX IR DeCODER -  ASCII Drawing __

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 __ Designed by Radio Amateur Society of Norwich

LFSR provides encryption -  09/13/01 EDN-Design Ideas 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__ Circuit Design 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)  __

LM1800 Stereo Demodulator -  Phase-Locked Loop FM Stereo Demodulator __

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__ Circuit Design by Antonio Di Rocco

Microcontroller visualizes hex code -  04/27/00 EDN-Design Ideas In µC 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 wish to observe the output data.  Many engineers are unfamiliar with hex code and prefer to observe data in the common decimal format.  __ Circuit Design by Abel Raynus

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.   __

One 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__ Circuit Design by Deaignby  Haobin Dong, Huazhong University of Science and Technology, China

Phototimer Controls LoA - D -  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__ Circuit Design by Abel Raynus, Armatron International, Melrose, MA

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.   __ Designed by Radio Amateur Society of Norwich

Practical MS Decoder -  The schematic diagram of the MS Decoder may look complicated but is actually quite simple.  Both the Mid and Side signals are initially.   __ Designed by John Simonton

Professional Stereo Encoder -  Uses high quality NJM2035 stereo coder IC.   __

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RDS/RBDS Decoder with optional FM stereo receiver -  This project supports both RDS (Europe) and RBDS (USA)   Tuner FM band 88..108 MhZ (Europe and USA.)   You can choose between a 4x20 character LCD or a smaller graphical LCD to display data. __ Designed by Michel Bavin

Read 10 or More switches using only two I/O pins of a microcontroller -  02/28/13  EDN-Design Ideas Use a decoded counter to easily read one or multiple switch closures.  __ Circuit Design by Aruna Rubasinghe

Remote Control Encoder/Decoder with PIC16C620 & PIC12C508 -  Control up to 8 devices by this easy constructable remote control.  It can work as a radio or infrared remote control, depending on the components.  Each device output can be configured to be momentary (turned on while you press the button) or latched.  Latched outputs can be toggled on/off by one button per channel, or turned on and off by two buttons per channel.   __ Designed by Peter Jakab

Rotary Encoder Mates with Digital Potentiometer -  6-Mar-03 EDN-Design Ideas Buck IC boosts battery voltage for white LEDIn 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__ Circuit Design by Peter Khairolomour, Analog Devices, San Jose, CA

Satellite-dish command Decoder -  03/04/04  EDN-Design Ideas 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__ Circuit Design by Mark Giebler, Oakdale, MN

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!  __ Designed by Bob Barker, not the TV Host

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__ Circuit Design by Alex Knight, Cummins Engine Co, Columbus, IN

Simple Circuit phototimer controls loA - D -  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__ Circuit Design by Abel Raynus, Armatron International, Melrose, MA

Simple Circuit 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 __ Designed by Rod Elliott  ESP

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__ Circuit Design by Deaign Idea by Haobin Dong, Huazhong University of Science and Technology, China

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 __ Designed by Rod Elliott  ESP

TDA1591 Stereo Decoder -  Stereo Decoder with TDA1591 IC.   __

Use your printer port as a high-current AM meter -  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.   __ Circuit Design by K Suresh, Indira Gandhi Centre for Atomic Research, Kalpakkam, India

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__ Circuit Design by Gary Kath and Craig Bishop, Scotch Plains, NJ


De-Coder Circuits:  #'s - L      M - Z


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