Quad 50E adaptors:  (Electronic circuit added 7/03)

Quad 50E circuit:  (Electronic circuit added 7/03)

Quad II circuit:  (Electronic circuit added 7/03)

Quad spares suppliers:  (Electronic circuit added 7/03)

Quadrature Signal Interface to a COP400 Microcontroller:  National Semiconductor - Application Note   (added 2/06)

RAM Keep-Alive:  National Semiconductor - Application Note   (added 2/06)

Ram mapping ST75C50:  1 - INTRODUCTION The purpose of This AppNote is to explain what are the " interesting internal variables " that can be Read, Written or Modified using the MR, MW, CR commands.... RAM MAPPING ST75C50 RAM MAPPING ST75C50  (Circuit / schematic design added 6/06)

Rapid Prototyping Methods for Embedded System Development:  Agilent Application Note (app note added  6/06)

Rapid Prototyping Speeds Development of UMTS W-CDMA Algorithms:  Agilent Application Note (app note added  6/06)

Ratiometric Sensing using the PIC16C774:  Microchip Application Note - Published 4-Apr-00   (added 2/06)

RDS Encoder:  (Electronic circuit added 4/05)

Reading Data from the Parallel Port:  (added 11/05)

Real-Time Operating System for PIC16/17:  Microchip Application Note - Published 7-Jan-00   (added 2/06)

Recommendations for oce-lite based debug in supeR10 applications:  AN1983 1 - INTRODUCTION The purpose of this note is to give indications on how to design Super10 based applications, to ease OCE-Lite debugging task.... The intended audiences of this note are SOC designers, hardware application designers, hardware / software development... (Circuit / schematic design added 6/06)

Recommendations for real-time debugging using bondout chip in supeR10 applications:  AN1981 1 - INTRODUCTION The purpose of This AppNote is to give indications on how to design a System-On-Chip (SOC) based on the Super10 microcontroller to ease its real-time emulation using the corresponding Bondout chip....  (Circuit / schematic design added 6/06)

Reducing Noise on Microcomputer Buses:  National Semiconductor - Application Note   (added 2/06)

Remote Control Encoder/decoder with PIC16C620 and PIC12C508:  (added 09/04)

Resistance and Capacitance Meter using a PIC 16C622:  Microchip Application Note - Published 26-Aug-97   (added 2/06)

RLC circuits match transmission lines to loads:  04/10/97 EDN-Design Ideas / (Circuit / schematic design added 6/06)  

Rolling code generator uses flash microcontroller:  05/03/01 EDN-Design Ideas /(added 2/06) 

Rotating Sprocket Wheel Generator (PIC16F84):  (Electronic circuit added 7/03)

Routine automates pattern/sequence detection:  05/16/02 EDN Design Ideas  /  (added 1/05)  Sequence detection is a common operation in many communication and security systems. Some good examples are HDLC-flag identification and signature analysis. As the complexity of the system increases, designing circuitry for sequence detection becomes tedious and laborious. Using the software tool in this Design Idea, you can generate HDL code in VHDL or Verilog formats for both Mealy and Moore ......

Safety, EMI and RFI Considerations / AN-42007:  Fairchild Application Notes (app note added  6/06)

SCAN90CP02 Design for Test Features:  National Semiconductor - Application Note   (added 2/06)

ScanMate Audio Activated Recorded:  (Electronic circuit added 7/03)

Scenix (and PIC) Programmer:  (circuit added 7/02)

SCR's and triacs in automotive applications:  AN871  (Circuit / schematic design added 6/06)

Selecting a Processor Reset IC:  Microchip Application Note - Published 21-Nov-02   (added 2/06)

Selecting an MCP21XX Devicefor IRDA® Applications:  Microchip Application Note - Published 12-Aug-04   (added 2/06)

Selecting Input/Output Options on COPS Microcontrollers:  National Semiconductor - Application Note   (added 2/06)

Selection of MOSFETs in Switch Mode DC-DC Converters / AB-8:  Fairchild Application Notes (app note added  6/06)

Self-Programming the PIC18C452 OTP:  Microchip Application Note - Published 6-Apr-01   (added 2/06)

Sensored BLDC Motor Control using DSPIC30F2010:  Microchip Application Note - Published 23-Jun-05   (added 2/06)

Sensorless BLDC Motor Control using DSPIC30F2010:  Microchip Application Note - Published 26-Jul-05   (added 2/06)

Ser Key 10 Key Serial Keypad Encoder:  (Electronic circuit added 7/03)

Serial Comms to LED Driver:  (circuit / schematic added 2/03)

Serial to Parallel Converter using the AT89C2051:  (Electronic circuit added 7/03)

Serialized Quick Turn ProgrammingSM (SQTPSM):  Microchip Application Note - Published 19-Sep-03   (added 2/06)

Setting Pre-Emphasis Level for DS40MB200 Dual 4Gb/s Mux/Buffer:  National Semiconductor - Application Note   (added 2/06)

Setup Tests Bit Error Rate:  03/18/04 EDN Design Ideas  /  (added 1/05)  Traditionally, the reception quality of a digital receiver is expressed in terms of BER (bit-error rate). This figure is the proportion of received bit errors in a given period. Typically, you measure the BER in the lab by applying an RF signal, modulated by a pseudorandom code, to the receiver under test....

SGS-Thomson SLIC kit ac models:  APPLICATION NOTE * PLOT AC VDB (12) VP (12) * STORE AC VDB (12) VP (12) * * * END... (Circuit / schematic design added 6/06)

Sgs-thomson SLIC kiTS and combo ii:  If you need more specific informations the complete  is available, ask for it to our sales office.... In the complete  you can find all the details for each country in particular : - Echo measurements - Combo II simulation software... (Circuit / schematic design added 6/06)

Sharp Palm-Top/Hand-Held to RS-232 Serial Converter:  (Electronic circuit added 4/05)

Simple logic analyzer pushes microcontroller to its limit:  12/07/00 EDN Design Ideas /  (added 2/06) 

Simple setup tests Bit error rate:  03/18/04 EDN Design Ideas  /  (added 1/05)  Traditionally, the reception quality of a digital receiver is expressed in terms of BER (bit-error rate). This figure is the proportion of received bit errors in a given period. Typically, you measure the BER in the lab by applying an RF signal, modulated by a pseudorandom code, to the receiver under test....

Simplified Programming of Xilinx Devices using a SCANSTA111/112 JTAG Chain Mux:  National Semiconductor - Application Note   (added 2/06)

Simplified Thermocouple Interfaces and PICmicro® MCUs:  Microchip Application Note - Published 21-Jul-02   (added 2/06)

Simplify computer aided engineering with scientific to engineering conversion:  09/30/04 EDN Design Ideas  /  (added 1/05)  The simple yet useful formula in this Design Idea enables conversion from scientific format (for example, 2.2-9), which is typical for CAE (computer-aided-engineering), double-precision output values, into "human-friendly" engineering format (for example, 2.2 nF). The engineering format is more suitable for bills of material and other electrical and electronic-engineering documents and specific......

Simplifying External Memory Connections of PIC17CXXX PICmicro ® Microcontrollers:  Microchip Application Note - Published 23-Aug-99   (added 2/06)

Single processor pin Controls on/off function:  02/05/2004  EDN-Design Ideas  In low-noise analog circuits, a high-gain amplifier serves at the input to increase the SNR. The input signal level determines the input-stage gain; low-level signals require the highest gain. It is also standard practice in low-noise analog-signal processing to make the circuit's bandwidth as narrow as possible to pass only the useful input-signal spectrum. (added 10/05)

Smart AIR Handler using ProMPT™ and the PIC18F2539:  Microchip Application Note - Published 20-Dec-02   (added 2/06)

Smart power technologies for powertrain and body electronics:  AN471 horizontal technologies make it possible to have power structures that are completely independent (figure 6). It is therefore evident that a vertical technology... (Circuit / schematic design added 6/06)

Software PID Control of an Inverted Pendulum using the PIC16F684:  Microchip Application Note - Published 1-Dec-04   (added 2/06)

Software Stack Management:  Microchip Application Note - Published 26-Aug-97   (added 2/06)

Speech Recognition using HM2007:  (Electronic circuit added 7/03)

Speed C functions for C16x microcontrollers:  08/03/00 EDN-Design Ideas  / (added 11/05)   The Infineon C16x Series of µCs use an internal 16-bit-register architecture. The architecture can also process byte-wide functions. The µC uses byte moves to implement library functions such as memset() or memcopy(). This process makes the library code independent of count values and address values; both may be odd or even. The disadvantage is the loss of speed because of the need to process loop counters for every byte. Memory access also cuts the speed, because two cycles are necessary to write a word in 2 bytes. The code in Listing 1 implements a fast_memset() function that takes care of the byte count as well as the start access. Both may be odd or even. The function uses as many word moves as possible to preset the memory area. You can easily change the routine to process the copy function, memcopy(), with the same advantages. (DI #2569)

Speedy Logic Translator uses Little Power:  07/08/99 EDN Design Ideas  / (added 2/06)  [Note: File contains multiple circuits.  Scroll to find this one.]  In handheld equipment, component count and power consumption are critical considerations. This Design Idea uses only a few transistors to configure a high-speed output stage of an RS-232C link while draining few precious milliamperes from the batteries. In general, the data to transmit comes from an IC (for example, an ADC or a µC) connected to 5V and ground. The RS-232C protocol requires ±12V transmission levels. You can derive the voltages directly from the RS-232C line of a computer with a simple diode circuit. You need a charge pump only in the case of a direct connection to a printer because the 12 and –12V may not be available simultaneously....

Squeeze extra outputs from a pin limited microcontroller:  08/04/05 EDN Design Ideas  / (added 2/06)   Shift register expands small-footprint microcontroller I/O.

ST7 - using the ST7 universal serial bus microcontroller:  Objectives : This AppNote describes an example firmware for interaction with the USB interface hardware and support interactions between a USB device and a host system.... The USB logical device is discussed in detailed in this application note.... (Circuit / schematic design added 6/06)

ST75C502-default tone detectors:  1 - INTRODUCTION The purpose of This AppNote is to describe the default setup for the tone detection, and the way they are managed during the Automode Handshake.... (Circuit / schematic design added 6/06)

ST75C502-ram mapping:  I - INTRODUCTION The purpose of This AppNote is to explain what are the " interesting internal variables " that can be Read, Written or Modified using the MR, MW, CR commands.... (Circuit / schematic design added 6/06)

ST75C520 hardware power-up:  ST75C520 HARDWARE POWER-UP  (Circuit / schematic design added 6/06)

ST9 - ST92E150 and ST92E120 problem resolution guidelines:  AN1474 Lo cated in a reserved flash area, the TestFlash contains the bootcode which performs the E3prom initialization, provides the possibility to program the flash by In System Programming (refer to the AN1450 ST9 Flash Programming for a detailed... (Circuit / schematic design added 6/06)

State and Timing Modules for Agilent Technologies Logic Analysis Systems:  Agilent Application Note (app note added  6/06)

Statistical process control:  Application Note - MiniCircuits.com  (Circuit / schematic design added 6/06)

STE101preference design for 100base-fx, 100base-tx and 10base-t:  AN2232 For more details about the product and reference design board, please refer to AN1302 : STE10 / 100A - PCI 10/100 Ethernet Controller with Integrated PHY.... For a detailed description of the STE101P in FX mode, please refer to Application... (Circuit / schematic design added 6/06)

Ste800p - transformerless application:  AN1519 (1 or 2 dB of attenuation) and so the signal that is produced at the transmitter arrives unchanged at the receive side....  (Circuit / schematic design added 6/06)

STLC3055n single supply SLIC for will application:  AN2117 Having at hand a copy of the device Data Sheet is essential for quicker and easier understanding of the content of this Application Note....  (Circuit / schematic design added 6/06)

Substituting the RC5051 for the RC5050 / AB-10:  Fairchild Application Notes (app note added  6/06)

Suppressing MOSFET Gate Ringing in Converters: Selection of a Gate Resistor / AB-9:  Fairchild Application Notes (app note added  6/06)

Suppression of Prescaler Self-Oscillation (1/14/94) :  Application Note - California Eastern Laboratories - Doc #902  (Circuit / schematic design added 6/06)

Surface Mount Environmental Specifications:  Application Note - MiniCircuits.com  (Circuit / schematic design added 6/06)

Surface Mounting for PowerSIP Package - App Note 36:  Apex Microtechnology Corp - App Note - (Circuit / schematic design added 6/06)

Switch conserves microcontroller's I/O pin :  09/15/94 EDN Design Ideas /  (added 2/06) 

Switch Mode Battery Eliminator Based on a PIC16C72A:  Microchip Application Note - Published 25-Mar-99   (added 2/06)

Switcher IC hikes Battery Charger's Efficiency:  06/23/94 EDN-Design Ideas / (added 11/05) The adjustable switching-regulator LM2575T-ADJ, IC1, in Fig 1 replaces a power-wasting pnp transistor in the data-book design for the NiCd battery charger IC2, a MAX713. (Its sister device, the MAX712, handles NiMH cells.) IC2 "fast-charges" cells by monitoring the cell's voltage and charging current until they exhibit subtle anomalies that signal a fully charged cell. Because the circuit charges at only a 1.5C rate, the circuit does not need to sense the cell's temperature. (A 1C, or "standard," rate signifies charging the battery to its full capacity in 1 hour.)...  

Synchronous buck MOSFET loss calculations with Excel model / AN-6005:  Fairchild Application Notes (app note added  6/06)

System Design Considerations for Implementing a ROM Microcontroller:  Microchip Application Note - Published 15-Nov-99   (added 2/06)

System Design Practice (TC4426/7/8, TC4426A/7A/8A):  Microchip Application Note - Published 12-Nov-02   (added 2/06)

System Supervisors in ICSP™ Architectures:  Microchip Application Note - Published 11-Feb-02   (added 2/06)