Decoder Circuits
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This device and all information contained on this website is for educational purposes only. This device must be used in conjunction with any and all local, provincial and federal laws. It is up to the end user to comply with all legal guidelines, thus we are....
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This device and all information contained on this website is for educational purposes only. This device must be used in conjunction with any and all local, provincial and federal laws. It is up to the end user to comply with all legal guidelines, thus we are....
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Binary Coded Decimal is a number system that only counts from 0 to 9 and then repeats. The table below shows the conversion between the different numbering systems and BCD code. BCD is also called 8421 because the binary LSB counts as a 1, the next bit adds....
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Note how the output letters of the integrated circuit [Output A] match with the Diode letters in the 7-Segment LED above. Each IC output corresponds to a particular input [diode] of the seven segment display. 1. BI/RBO is wire-OR logic serving as blanking....
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CD4051BMS, CD4052BMS and CD4053BMS analog multiplexers/ demultiplexers are digitally controlled analog switches having low ON impedance and very low OFF leakage current. Control of analog signals up to 20V peak-topeak can be achieved by digital signal....
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The DE2 board is equipped with an Analog Devices ADV7181 TV decoder chip. The ADV7181 is an integrated video decoder that automatically detects and converts a standard analog baseband television signal (NTSC, PAL, and SECAM) into 4:2:2 component video data....
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This circuit, which was developed to monitor the traffic of bumblebees in and out of the hive, differentiates a-to-b motion from b-to-b motion. When used with an optical decoder, the circuit distinguishes clockwise from counterclockwise rotation and provides....
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This circuit consists of an amplifier and video detector with a second subcarrier detector for synch recovery purposes. A pulse-former circuit modulates the gain of the main channel increasing it during synch intervals...
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The phone system use to be operated by human operator in a telephone exchange room. The caller will pick up the phone, giving instruction to the operator to connect their line to the destination over the other end of the telephone. As more and more people....
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There is also a version without SMD. This version is called 2. 1, slightly larger (80 * 100 mm) and equipped with dual drivers (to 1A load), but runs with the same software. The input voltage of the external power supply is fed to X2 (15V), type of....
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This software was written for this hardware. Therefore the pin allocation of the Atmel Attiny2313 in this curciut corresponds to the orginal of So the software will run on both hardware platforms. Important note: The processor AT90S2313 requires an external....
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After some years i started using the NMS8280 again for HAM radio purpose. When sending a signal in the air, radio amateurs should always identify by giving their callsign, this is also the case for sending a video signal. I wrote a program using the WBASS....
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The schematic diagram of the MS Decoder may look complicated but is actually quite simple. Both the Mid and Side signals are initially buffered by unity gain inverting buffers formed around IC1b and IC2 b. This is necessary for two reasons, first to ensure....
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The IR Widget captures the infrared signals used by remote controls. It is able to determine the carrier frequency and demodulate the carrier in the digital or analog domain. The captured information can be used to reproduce or recognize the signal. The....
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This page`s mission is to help you understand how to use the STA013 MP3 decoder chip in order to design your own MP3 player. The player design described at the rest of these pages uses the STA013, but this page is intended to help you understand the STA013....
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Following a power interruption, all relays assume their previous state before the power interruption. (relay states and PIN are stored in non-volatile memory) An Motorola MC145436 DTMF decoder is used, this IC is clocked with a common 3. 58Mhz NTSC colour....
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All PIC IR Decoders share the same, easy to build, hardware. All parts for this hardware are easily obtainable throughout the world. Building it shouldn`t take very much longer than one evening. At the heart of the diagram is the PIC16F84 processor. It is....
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The HT6337 is designed as one kind of infrared remote control receiving decoder circuit that can be used in the electric fan application. It uses the 28-pin dual-row DIP package, the matching model is HT12C. The HT6337 is one of the series products. The....
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The SL517 is designed as the audio, RF or infrared decoder circuit that can be used in the electronic toy application. The internal circuit is composed of the analog amplifier, the frequency divider, the bistable circuit and the driver. Features It uses the....
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Waveform A is timing diagram that shows A split-phase data signal. It consist of a series of binary digits that occur at a periodic rate. Duration of each bit....
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The output of this circuit will be activated when a mix of two tone/frequency is detected on the input. The frequency f is determined by the values of R1 and....
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To save the complexity of driver circuit, a multiplexer icrcuit can be used for the solution. With this multiplexed BCD decoder, we can use only one BCD....
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This circuit detects the dial tone from a telephone line and decodes the keypad pressed on the remote telephone. The dial tone we heard when we pick up the phone set is call Dual Tone Multi-Frequency, DTMF in short. The name was given because the tone that....
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Permits monitoring local VHF FM repeater for calls from friends without having to listen to chatter of others or to repeater noise. Operation is similar to that of Motorola paging units in which special tone is transmitted to disable squelch of receiver....
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