H BRIDGE INVERTER WITH PIC18 Search Results

H BRIDGE INVERTER WITH PIC18 Result Highlights (5)

Part	Manufacturer	Description
7UL1G07FU	Toshiba Electronic Devices & Storage Corporation	One-Gate Logic(L-MOS), Non-Inverter Buffer (Open Drain), USV, -40 to 85 degC
TMPM4GQF15FG	Toshiba Electronic Devices & Storage Corporation	Arm Cortex-M4 processor with FPU Core Based Microcontroller/32bit/P-LQFP144-2020-0.50-002
TMPM4GRF20FG	Toshiba Electronic Devices & Storage Corporation	Arm Cortex-M4 processor with FPU Core Based Microcontroller/32bit/P-LQFP176-2020-0.40-002
TMPM4KMFWAFG	Toshiba Electronic Devices & Storage Corporation	Arm Cortex-M4 processor with FPU Core Based Microcontroller/32bit/P-LQFP80-1212-0.50-003
TMPM4MMFWAFG	Toshiba Electronic Devices & Storage Corporation	Arm Cortex-M4 processor with FPU Core Based Microcontroller/32bit/P-LQFP80-1212-0.50-003

H BRIDGE INVERTER WITH PIC18 Datasheets Context Search

Catalog Datasheet	MFG & Type	Document Tags	PDF
3 phase inverter schematic diagram pic ac motor Abstract: sine wave inverter schematic and firmware PID control PIC18 an843, pic18 AN900 microchip three phase bridge inverter in 180 degree and 120 using pic18 microcontroller ds00887 ACIM control with the PIC18F452 and an843 AN900 PIC three phase bridge inverter in 180 degree and 120 Text: AN900 Controlling 3-Phase AC Induction Motors Using the PIC18F4431 Author: Jon Burroughs Microchip Technology Inc. The three peripherals and their features are: 1. INTRODUCTION Previous Microchip authors Parekh and Yedamale have described the implementation of a 3-phase AC	Original	AN900 PIC18F4431 AN843) PIC18F452. PIC16F7X7 AN889) D-85737 NL-5152 DS00900A-page 3 phase inverter schematic diagram pic ac motor sine wave inverter schematic and firmware PID control PIC18 an843, pic18 AN900 microchip three phase bridge inverter in 180 degree and 120 using pic18 microcontroller ds00887 ACIM control with the PIC18F452 and an843 AN900 PIC three phase bridge inverter in 180 degree and 120	PDF
slip ring motor characteristics curve Abstract: schematic diagram induction heating PIC16C738 vvvf speed control of 3 phase induction motor ir21362_DIP28 AN843 design of a phase squirrel cage induction motor slip ring motor an843, pic18 DC MOTOR SPEED CONTROL USING IGBT Text: M AN843 Speed Control of 3-Phase Induction Motor Using PIC18 Microcontrollers Author: Padmaraja Yedamale Microchip Technology Inc. INTRODUCTION Induction motors are the most widely used motors for appliances, industrial control, and automation; hence, they are often called the workhorse of the motion industry. They are robust, reliable, and durable. When power	Original	AN843 PIC18 D-81739 DS00843A-page slip ring motor characteristics curve schematic diagram induction heating PIC16C738 vvvf speed control of 3 phase induction motor ir21362_DIP28 AN843 design of a phase squirrel cage induction motor slip ring motor an843, pic18 DC MOTOR SPEED CONTROL USING IGBT	PDF
microchip Solar Charge Controller PWM Abstract: Phase Shifted Full Bridge LLC Resonant Converter EXAMPLE of dsPIC33 full bridge pwm Sine Wave Inverter SMPS Voltage PID Controller 12V to 220V smps inverter Sine wave PWM DC to AC Inverter ics Solar Charge Controller circuit PWM 12v EXAMPLE of forward smps with dsPIC Full-bridge LLC resonant converter pic PWM Solar Charge Controller Text: Intelligent Power Supply January 2011 Intelligent Power Supply Design Solutions www.microchip.com/power Discover Microchip’s Comprehensive Intelligent Power Supply Solutions Today, power supply designers must create power conversion products that offer greater efficiency, higher power density, higher reliability, advanced communications	Original	intelli65-6334-8870 DS01240D DS01240D* microchip Solar Charge Controller PWM Phase Shifted Full Bridge LLC Resonant Converter EXAMPLE of dsPIC33 full bridge pwm Sine Wave Inverter SMPS Voltage PID Controller 12V to 220V smps inverter Sine wave PWM DC to AC Inverter ics Solar Charge Controller circuit PWM 12v EXAMPLE of forward smps with dsPIC Full-bridge LLC resonant converter pic PWM Solar Charge Controller	PDF
schematic diagram motor control Abstract: DS pic QEI ENCODER LANGUAGE C basic ac motor reverse forward electrical diagram 3 phase inverter schematic diagram pic ac motor code hex IRAMS10UP60A with sensorless bldc motor control inverter schematic diagram schematic diagram brushless motor control varistor MOV1 ds51453 IGBT PIC MICROCONTROLLER single phase induction motor speed control circuits Text: PICDEM MC Development Board for PIC18FXX31 User’s Guide  2004 Microchip Technology Inc. DS51453A Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet.	Original	PIC18FXX31 DS51453A D-85737 NL-5152 DS00000A-page schematic diagram motor control DS pic QEI ENCODER LANGUAGE C basic ac motor reverse forward electrical diagram 3 phase inverter schematic diagram pic ac motor code hex IRAMS10UP60A with sensorless bldc motor control inverter schematic diagram schematic diagram brushless motor control varistor MOV1 ds51453 IGBT PIC MICROCONTROLLER single phase induction motor speed control circuits	PDF
u18 202 sensor hall Abstract: DS33014 DS70605 three phase induction motor control schematics di schematic diagram inverter 24V to 3 PHASE bldc dsPICDEM MCHV DEVELOPMENT BOARD DS70316 4000w smps MC6024 u18 sensor hall Text: dsPICDEM MCHV Development System User’s Guide  2009 Microchip Technology Inc. DS70605A Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet.	Original	DS70605A DS70605A-page u18 202 sensor hall DS33014 DS70605 three phase induction motor control schematics di schematic diagram inverter 24V to 3 PHASE bldc dsPICDEM MCHV DEVELOPMENT BOARD DS70316 4000w smps MC6024 u18 sensor hall	PDF
RJ11 6 pin connector Abstract: schematic diagram 48v bldc motor speed controller schematic diagram 48v dc motor speed controller schematic diagram inverter 24V to 3 PHASE bldc DS70331A DS70316 motor schematic diagram inverter 24V to 3 PHASE AN1017 sinusoidal control of PMSM motors schematic diagram 48v dc motor winding schematic and circuit diagram 48v bldc motor speed Text: dsPICDEMTM MCLV DEVELOPMENT BOARD USER’S GUIDE 2008 Microchip Technology Inc. DS70331A Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet.	Original	DS70331A DS70331A-page RJ11 6 pin connector schematic diagram 48v bldc motor speed controller schematic diagram 48v dc motor speed controller schematic diagram inverter 24V to 3 PHASE bldc DS70331A DS70316 motor schematic diagram inverter 24V to 3 PHASE AN1017 sinusoidal control of PMSM motors schematic diagram 48v dc motor winding schematic and circuit diagram 48v bldc motor speed	PDF
1000w inverter PURE SINE WAVE schematic diagram Abstract: ups circuit schematic diagram 1000w schematic diagram offline UPS 2000w dc to ac inverter Circuit diagram schematic diagram inverter 2000w schematic diagram dc inverter 1000W 1000w inverter design and calculation inverter PURE SINE WAVE schematic diagram schematic diagram online UPS SCHEMATIC 1000w inverter Text: AN1279 Offline UPS Reference Design Using the dsPIC DSC Authors: Sagar Khare Mohammad Kamil Microchip Technology Inc. UPS OVERVIEW An Uninterruptible Power Supply, or UPS, is an electronic device that provides an alternative electric power supply to connected electronic equipment when	Original	AN1279 DS01279A-page 1000w inverter PURE SINE WAVE schematic diagram ups circuit schematic diagram 1000w schematic diagram offline UPS 2000w dc to ac inverter Circuit diagram schematic diagram inverter 2000w schematic diagram dc inverter 1000W 1000w inverter design and calculation inverter PURE SINE WAVE schematic diagram schematic diagram online UPS SCHEMATIC 1000w inverter	PDF
DS52062 Abstract: 48V 3 phase BLDC motor controller MA330031 Text: dsPICDEM MCLV-2 Development Board User’s Guide  2012 Microchip Technology Inc. DS52080A Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet.	Original	DS52080A DS52080A-page DS52062 48V 3 phase BLDC motor controller MA330031	PDF
74VHC1G125 Abstract: 74VHC1G125DF Apple Authentication coprocessor pin diagram of PIC18f4550 74VHC1G14DF RS-232 to usb converter with pic18f4550 XC3S400A-4FTG256C verilog code for fixed point inverter DS28CN01 pic i2c Text: 19-5894; Rev 0; 6/11 Secure Authentication Starter Kit The secure authentication starter kit is a highly programmable hardware/software system for development, lab testing, and demonstration of embedded applications that use Maxim’s SHA-1-based secure authentication	Original	DS2460, PIC18F4550, DS28E01/DS28CN01/DS2460 74VHC1G125 74VHC1G125DF Apple Authentication coprocessor pin diagram of PIC18f4550 74VHC1G14DF RS-232 to usb converter with pic18f4550 XC3S400A-4FTG256C verilog code for fixed point inverter DS28CN01 pic i2c	PDF
dspic30f motor control example codes Abstract: PID control dsPIC servo motor position control 1 HP SINGLE PHASE induction motor speed control using pwm inverter 3 phase ac motor speed control pic code PIC18f example codes sensorless bldc c source code dspic PI control PIC bldc motor speed control PID PIC16f dc motor control three phase BLDC motor PIC mosfet driver code Dspic30f3011 pwm sample code Text: Motor Control September 2008 Motor Control Design Solutions www.microchip.com/motor Discover Microchip’s Comprehensive Motor Control Solutions Mixed-Signal Power Torque Speed Input Direction Position 8-bit PIC Microcontroller or 16-bit dsPIC® Digital	Original	16-bit DS00896F DS00896F* dspic30f motor control example codes PID control dsPIC servo motor position control 1 HP SINGLE PHASE induction motor speed control using pwm inverter 3 phase ac motor speed control pic code PIC18f example codes sensorless bldc c source code dspic PI control PIC bldc motor speed control PID PIC16f dc motor control three phase BLDC motor PIC mosfet driver code Dspic30f3011 pwm sample code	PDF
single phase PWM inverters circuit diagram Abstract: PIC mcu code for sine wave inverter sine wave inverter using pic SCR firing inverter circuit microchip sinewave inverter scr driver dc motor speed control microchip sinewave 3 phase inverter fan motor winding formula pic sine inverter speed control of 3 phase induction motor by using scr Text: AN984 An Introduction to AC Induction Motor Control Using the dsPIC30F MCU Author: Steve Bowling Microchip Technology INTRODUCTION This application note demonstrates how you use the dsPIC30F MCU to control an AC Induction Motor ACIM . The discussion is based on the dsPICDEM MC Motor	Original	AN984 dsPIC30F It34-8870 DS00984A-page single phase PWM inverters circuit diagram PIC mcu code for sine wave inverter sine wave inverter using pic SCR firing inverter circuit microchip sinewave inverter scr driver dc motor speed control microchip sinewave 3 phase inverter fan motor winding formula pic sine inverter speed control of 3 phase induction motor by using scr	PDF
schematic diagram 48v bldc motor speed controller Abstract: PWM Inverter using PIC Microcontroller 3 phase inverter schematic diagram pic ac motor code hex 48v to 230v inverters circuit diagram PIC18f dc motor speed control 24V 12v to 230v inverters circuit diagrams pic18f MCU Family Reference Manual DS51554 PIC microcontroller based sensorless speed control dc motor speed control circuit diagram with dsPIC Text: PICDEM MC LV Development Board User’s Guide 2006 Microchip Technology Inc. DS51554B Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet.	Original	DS51554B DS51554B-page schematic diagram 48v bldc motor speed controller PWM Inverter using PIC Microcontroller 3 phase inverter schematic diagram pic ac motor code hex 48v to 230v inverters circuit diagram PIC18f dc motor speed control 24V 12v to 230v inverters circuit diagrams pic18f MCU Family Reference Manual DS51554 PIC microcontroller based sensorless speed control dc motor speed control circuit diagram with dsPIC	PDF
PIC33F Abstract: dspic33f example codes QEI programming in C several PWM outputs PIC18F dsPICDEM MCSM DEVELOPMENT BOARD PIC16F1823 example codes pic c code 3 phase induction AC300022 PID control dsPIC servo motor position control dspic30f motor control example codes pic16f1823 usart c code Text: Motor Control Spring 2010 Motor Control Design Solutions www.microchip.com/motor Discover Microchip’s Comprehensive Motor Control Solutions Got a tight schedule? We provide free motor control software with application notes and schematics for most motor control algorithms to shorten your	Original	16-bit DS00896G DS00896G* PIC33F dspic33f example codes QEI programming in C several PWM outputs PIC18F dsPICDEM MCSM DEVELOPMENT BOARD PIC16F1823 example codes pic c code 3 phase induction AC300022 PID control dsPIC servo motor position control dspic30f motor control example codes pic16f1823 usart c code	PDF
PIC16 lin bus example codes C Abstract: water level indicator using pic microcontroller pic18f MCU Family Reference Manual PWM Inverter using PIC Microcontroller inverter pic assembly code PPAP level submission requirement table PIC16 example codes lin transceiver apqp MANUAL APGDT002 PPAP MANUAL Text: Automotive Automotive Capabilities www.microchip.com/automotive Accelerating Distributed Intelligence in Tomorrow’s Vehicle The evolution of electronics in the automotive market continues as the automotive system suppliers race to address the rigorous requirements of the automotive	Original	DS00163C DS00163C* PIC16 lin bus example codes C water level indicator using pic microcontroller pic18f MCU Family Reference Manual PWM Inverter using PIC Microcontroller inverter pic assembly code PPAP level submission requirement table PIC16 example codes lin transceiver apqp MANUAL APGDT002 PPAP MANUAL	PDF

Quadrature Encoder 333 cpr Abstract: pcb shunt second order low pass filter advantage and disadvantages AN894 PCB Mounting Hall Effect Current Transformer optical quadrature encoder microchip sinewave inverter microchip sinewave 3 phase inverter Microchip Master Conference AN894 microchip Text: M AN894 Motor Control Sensor Feedback Circuits Author: A list of the sensors that can be used to feedback information to a microcontroller are listed below: Jim Lepkowski Microchip Technology Inc. INTRODUCTION Sensors are a critical component in a motor control	Original	AN894 DK-2750 D-85737 NL-5152 Quadrature Encoder 333 cpr pcb shunt second order low pass filter advantage and disadvantages AN894 PCB Mounting Hall Effect Current Transformer optical quadrature encoder microchip sinewave inverter microchip sinewave 3 phase inverter Microchip Master Conference AN894 microchip	PDF
FSQ510 Equivalent Abstract: BTA12 6008 bta16 6008 ZIGBEE interface with AVR ATmega16 Precision triac control thermostat thyristor t 558 f eupec gw 5819 diode transistor a564 A564 transistor BSM25GP120 b2 Text: SEMICONDUCTORS MCU/MPU/DSP Atmel. . . . . . . . . 167, 168, 169, 170, 171, 172 Blackhawk. . . . . . . . . . . . . . . . . . . . . . . . . 173 Cyan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Cypress. . . . . . . . . . . . . . . 175, 176, 177, 178	Original	GP-20) FSQ510 Equivalent BTA12 6008 bta16 6008 ZIGBEE interface with AVR ATmega16 Precision triac control thermostat thyristor t 558 f eupec gw 5819 diode transistor a564 A564 transistor BSM25GP120 b2	PDF
220v AC voltage stabilizer schematic diagram Abstract: LG color tv Circuit Diagram tda 9370 1000w inverter PURE SINE WAVE schematic diagram schematic diagram atx Power supply 500w TV SHARP IC TDA 9381 PS circuit diagram wireless spy camera 9744 mini mainboard v1.2 sony 279-87 transistor E 13005-2 superpro lx Text: QUICK INDEX NEW IN THIS ISSUE! Detailed Index - See Pages 3-24 AD9272 Analog Front End, iMEMS Accelerometers & Gyroscopes . . . . . . 782, 2583 Connectors, Cable Assemblies, IC Sockets . . . . . . . . . . . 28-528 Acceleration and Pressure Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2585	Original	AD9272 P462-ND LNG295LFCP2U P463-ND LNG395MFTP5U 220v AC voltage stabilizer schematic diagram LG color tv Circuit Diagram tda 9370 1000w inverter PURE SINE WAVE schematic diagram schematic diagram atx Power supply 500w TV SHARP IC TDA 9381 PS circuit diagram wireless spy camera 9744 mini mainboard v1.2 sony 279-87 transistor E 13005-2 superpro lx	PDF
MPLAB inverter assembly code Abstract: DSPIC33F inverter source code REAL TIME CONTROL OF DC MOTOR DRIVE USING SPEECH dspic30f6014a dc motor induction cooking microchip PIC24f example code spi slave 3 phase pwm generator pic18f sin PWM using dspic33f DSPIC30F4011 inverter source code 3 phase pwm generator dspic33f Text: 16-bit Microcontrollers and Digital Signal Controllers 16-bit Embedded Control Solutions PIC24 Microcontrollers dsPIC Digital Signal Controllers July 2006 www.microchip.com/16bit 16-bit Embedded Control Solutions Do you need to add more performance or additional features to your products? Do you need more	Original	16-bit PIC24 com/16bit 16-bit DS01032B DS01032B* MPLAB inverter assembly code DSPIC33F inverter source code REAL TIME CONTROL OF DC MOTOR DRIVE USING SPEECH dspic30f6014a dc motor induction cooking microchip PIC24f example code spi slave 3 phase pwm generator pic18f sin PWM using dspic33f DSPIC30F4011 inverter source code 3 phase pwm generator dspic33f	PDF
schematic diagram atx Power supply 500w Abstract: pioneer PAL 012A 1000w inverter PURE SINE WAVE schematic diagram 600va numeric ups circuit diagrams winbond bios 25064 TLE 9180 infineon smsc MEC 1300 nu TBE schematic diagram inverter 2000w DK55 circuit diagram of luminous 600va UPS Text: QUICK INDEX NEW IN THIS ISSUE! Detailed Index - See Pages 3-24 Digital Signal Processors, iCoupler , iMEMS® and iSensor . . . . . 805, 2707, 2768-2769 Connectors, Cable Assemblies, IC Sockets . . . . . . . . . . . 28-568 RF Connectors . . . . . . . . . . . . . . . . . . . . . . Pages 454-455	Original	P462-ND P463-ND LNG295LFCP2U LNG395MFTP5U US2011) schematic diagram atx Power supply 500w pioneer PAL 012A 1000w inverter PURE SINE WAVE schematic diagram 600va numeric ups circuit diagrams winbond bios 25064 TLE 9180 infineon smsc MEC 1300 nu TBE schematic diagram inverter 2000w DK55 circuit diagram of luminous 600va UPS	PDF
PID control dsPIC Abstract: PIC24FJ256GB110 with c sample programs CE021 DS70046 16 Bit MCU example code for oled display in pic24fj256gb106 dspic30f6014a dc motor VOICE RECOGNITION for security system using matlab PIC24FJ64GB106 mini projects using matlab for amplifier iir adaptive Filter matlab lms Text: 16-bit Microcontrollers and Digital Signal Controllers March 2008 16-bit Embedded Control Solutions PIC24 Microcontrollers dsPIC Digital Signal Controllers www.microchip.com/16bit 16-bit Embedded Control Solutions Do you need to add more performance or additional features to your products? Do you need more	Original	16-bit PIC24 com/16bit DS01032E DS01032E* PID control dsPIC PIC24FJ256GB110 with c sample programs CE021 DS70046 16 Bit MCU example code for oled display in pic24fj256gb106 dspic30f6014a dc motor VOICE RECOGNITION for security system using matlab PIC24FJ64GB106 mini projects using matlab for amplifier iir adaptive Filter matlab lms	PDF
DS70187 Abstract: 42HS03 DS70316 dsPIC33FJ12MC204 dsPICDEM MCSM DEVELOPMENT BOARD AN822 MOTOR motor schematic diagram inverter 24V to 3 PHASE programming in C several PWM outputs PIC18F verilog code for stepper motor dsPIC33FJ32MC204 Text: dsPICDEM MCSM Development Board User’s Guide 2009 Microchip Technology Inc. DS70610A Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet.	Original	DS70610A DS70610A-page DS70187 42HS03 DS70316 dsPIC33FJ12MC204 dsPICDEM MCSM DEVELOPMENT BOARD AN822 MOTOR motor schematic diagram inverter 24V to 3 PHASE programming in C several PWM outputs PIC18F verilog code for stepper motor dsPIC33FJ32MC204	PDF
uPD70F3447 Abstract: U16929EE upd70f3187 Text: Cover User Manual Hardware V850E/PH2 32 32-bit Single-Chip Microcontroller µPD70F3187 µPD70F3447 All information contained in these materials, including products and product specifications, represents information on the product at the time of publication and is subject to change by	Original	V850E/PH2 32-bit PD70F3187 PD70F3447 R01UH0439ED0400, uPD70F3447 U16929EE upd70f3187	PDF
simulink matlab 3-phase inverter Abstract: PIC24FJ64GB102 mini projects using matlab for amplifier 128X64 graphical LCD screen graphical lcd 128X64 with touch screen sample code for oled display in pic24fj256gb106 home automation using enc28j60 brushless DC simulink matlab dspic Pmsm matlab with DSP and CCS PIC24FJ64GB106 Text: 16-bit Microcontrollers and Digital Signal Controllers Spring 2009 16-bit Embedded Control Solutions PIC24 Microcontrollers dsPIC Digital Signal Controllers www.microchip.com/16bit 16-bit Embedded Control Solutions Do you need to add more performance or additional features to your products? Do you need more	Original	16-bit PIC24 com/16bit PIC24FMicrochip DS01032F ds01032f* simulink matlab 3-phase inverter PIC24FJ64GB102 mini projects using matlab for amplifier 128X64 graphical LCD screen graphical lcd 128X64 with touch screen sample code for oled display in pic24fj256gb106 home automation using enc28j60 brushless DC simulink matlab dspic Pmsm matlab with DSP and CCS PIC24FJ64GB106	PDF
OS81050 Abstract: OS81060 PIC16F1829LIN BLDC TRW OS81082 OS85652 OS81110 OS85656 2-Port USB 2.0 hub controller OBD Text: Automotive Automotive Solutions Driving the Freedom to Innovate www.microchip.com/automotive Optimal Solutions for Innovation in the Car of the Future Microchip’s Automotive Solutions The automotive industry continues to be a challenging environment. Intense competition drives automotive OEMs to seek innovative	Original	DS00000163E OS81050 OS81060 PIC16F1829LIN BLDC TRW OS81082 OS85652 OS81110 OS85656 2-Port USB 2.0 hub controller OBD	PDF

H BRIDGE INVERTER WITH PIC18 Search Results

H BRIDGE INVERTER WITH PIC18 Result Highlights (5)

H BRIDGE INVERTER WITH PIC18 Datasheets Context Search

3 phase inverter schematic diagram pic ac motor

slip ring motor characteristics curve

microchip Solar Charge Controller PWM

schematic diagram motor control

u18 202 sensor hall

RJ11 6 pin connector

1000w inverter PURE SINE WAVE schematic diagram

DS52062

74VHC1G125

dspic30f motor control example codes

single phase PWM inverters circuit diagram

schematic diagram 48v bldc motor speed controller

PIC33F

PIC16 lin bus example codes C

Quadrature Encoder 333 cpr

FSQ510 Equivalent

220v AC voltage stabilizer schematic diagram

MPLAB inverter assembly code

schematic diagram atx Power supply 500w

PID control dsPIC

DS70187

uPD70F3447

simulink matlab 3-phase inverter

OS81050