Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers

    LT1070 SPICE MODEL Search Results

    LT1070 SPICE MODEL Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    IC sine wave generator for 1Hz-to-100MHz

    Abstract: architecture of microprocessor 80386 COP402N LT1074 design manual lt1070 spice model theory of microprocessor 8051 Linear Technology Magazine Circuit Collection Wien Bridge Oscillator jfet circuit LT1002 humidity transducer with lcd interfacing with 8051
    Text: DESIGN TOOLS Application Notes AN1 AN2 AN3 AN4 AN5 AN6 AN7 AN8 AN9 Understanding and Applying the LT1005 Multifunction Regulator This application note describes the unique operating characteristics of the LT1005 and describes a number of useful applications


    Original     		PDF LT1005 110VAC 220VAC 1-800-4-LINEAR IC sine wave generator for 1Hz-to-100MHz architecture of microprocessor 80386 COP402N LT1074 design manual lt1070 spice model theory of microprocessor 8051 Linear Technology Magazine Circuit Collection Wien Bridge Oscillator jfet circuit LT1002 humidity transducer with lcd interfacing with 8051

    LT1257

    Abstract: LT485 AN6752 OP227 "direct replacement" ltc1097 an6266 AN2544 LTC201 spice AN6677 AN1523
    Text: SUBJECT INDEX Subject Index to Linear Technology’s Applications Circuits A GUIDE TO THE INDEX Linear Technology has made a major effort to address a wide variety of circuit topics. The number of application problems solvable with innovative circuit techniques or new linear integrated circuits continues to grow. This comprehensive index includes


    Original     		PDF DN134) LT1016, LT1097, LT1222 LT1166, LT1431 LT1172, LT1006 LT1013, LT1088, LT1257 LT485 AN6752 OP227 "direct replacement" ltc1097 an6266 AN2544 LTC201 spice AN6677 AN1523

    40A 48v charger Schematic Diagram

    Abstract: 12v step-down transformer operations files AUTOMATIC ROOM LIGHT CONTROLLER with visitor counter bjt Self-Oscillating Flyback Converters ZVS Royer Self-Oscillating mobile charger 24V 20A SIEMENS battery charger spice model SFH213 fluorescent lamp driver 4W T5 3.1v to 350v ZENER DIODE
    Text: LINEAR TECHNOLOGY NOVEMBER 2000 IN THIS ISSUE… COVER ARTICLE 3MHz Synchronous Boost Regulators Save Critical Board Space in Portable Applications . 1 Mark Jordan Issue Highlights . 2 LTC in the News . 2


    Original     		PDF OT-23 10MHz D-70567 40A 48v charger Schematic Diagram 12v step-down transformer operations files AUTOMATIC ROOM LIGHT CONTROLLER with visitor counter bjt Self-Oscillating Flyback Converters ZVS Royer Self-Oscillating mobile charger 24V 20A SIEMENS battery charger spice model SFH213 fluorescent lamp driver 4W T5 3.1v to 350v ZENER DIODE

    mini Audio transformer 200k to 1k ct input

    Abstract: LT1158 optoisolator interface with 8051 application irfz44 AUDIO AMPLIFIER precision shunt regulators 431 24v 12v 10A converter EPS mos fet driver LT1105 LT1103 schematic inductive speed sensor using 8051
    Text: LINEAR TECHNOLOGY FEBRUARY 1992 IN THIS ISSUE . . . COVER ARTICLE The LT1158: Low Voltage, N-Channel Bridge Driver . 1 Milton Wilcox Editor's Page . 2 Richard Markell DESIGN FEATURES The LTC1096/1098: Micropower, SO-8 ADCs . 6 William Rempfer


    Original     		PDF LT1158: LTC1096/1098: LT1432: LTC1156 LT1103/1105 LT1124/1125: LTC1292: 12-Bit, mini Audio transformer 200k to 1k ct input LT1158 optoisolator interface with 8051 application irfz44 AUDIO AMPLIFIER precision shunt regulators 431 24v 12v 10A converter EPS mos fet driver LT1105 LT1103 schematic inductive speed sensor using 8051

    p6103

    Abstract: LT1201 regulator LT1190 arcing spice model LT1201 spark gap capacitors 1.5kv 262LYF-0092K Betatherm 15K capacitive pick up spark plug LT1028
    Text: LINEAR TECHNOLOGY OCTOBER 1992 IN THIS ISSUE . . . COVER ARTICLE Design Techniques for Electrostatic Discharge Protection. 1 Sean Gold Editor's Page . 2 Richard Markell DESIGN FEATURES LT1190 Family Ultra-High-Speed Op Amps Eclipse Prior Art


    Original     		PDF LT1190 LTC1196/1198 LT1112/LT1114 LTC1157 Now82-2-792-1617 p6103 LT1201 regulator arcing spice model LT1201 spark gap capacitors 1.5kv 262LYF-0092K Betatherm 15K capacitive pick up spark plug LT1028

    PIN CONFIGURATION IC CD4047

    Abstract: CD4047 100KHZ CIRCUITS LTC1632 IC 4047 working the working of IC 4047 operation of cd4047 inverters CD4047 equivalent PC Printer Port Controls I-V Curve Tracer cd4047 ic flyback transformer for Lt1308
    Text: LINEAR TECHNOLOGY FEBRUARY 1998 IN THIS ISSUE… COVER ARTICLE Universal Continuous-Time Filter Challenges Discrete Designs . 1 Max Hauser Issue Highlights . 2 LTC in the News . 2 DESIGN FEATURES


    Original     		PDF 10-Bit, 600kHz 333ksps, 16-Bit 100dB 14-Bit 200ksps 10MB/s 1-800-4-LINEAR PIN CONFIGURATION IC CD4047 CD4047 100KHZ CIRCUITS LTC1632 IC 4047 working the working of IC 4047 operation of cd4047 inverters CD4047 equivalent PC Printer Port Controls I-V Curve Tracer cd4047 ic flyback transformer for Lt1308

    pin of ic cd4047

    Abstract: equivalent sd 4841 diagram sharp alexander TV circuits Transistor MosFet Dual emitters catalog LT1387 operation of cd4047 inverters BPU22NF Silver mica capacitor 68pf 100V inverter circuit diagram using cd4047 LTC1387
    Text: LINEAR TECHNOLOGY VOLUME VII NUMBER 1 FEBRUARY 1997 IN THIS ISSUE . . . COVER ARTICLE The New LT 1425 Isolated Flyback Controller . 1 Kurk Matthews The New LT1425 Isolated Flyback Controller Issue Highlights .2 by Kurk Matthews


    Original     		PDF LT1425 LT1328: 1-800-4-LINEAR pin of ic cd4047 equivalent sd 4841 diagram sharp alexander TV circuits Transistor MosFet Dual emitters catalog LT1387 operation of cd4047 inverters BPU22NF Silver mica capacitor 68pf 100V inverter circuit diagram using cd4047 LTC1387

    operation of cd4047 inverters

    Abstract: number of turns of ferrite antenna at 125khz lt1558 LTC1632 LT1270 LT1317 LT1533 LTC1418 LTC1427-50 LTC1562
    Text: LINEAR TECHNOLOGY FEBRUARY 1998 IN THIS ISSUE… COVER ARTICLE Universal Continuous-Time Filter Challenges Discrete Designs . 1 Max Hauser Issue Highlights . 2 LTC in the News . 2 DESIGN FEATURES


    Original     		PDF 10-Bit, 600kHz 333ksps, 16-Bit 100dB 14-Bit 200ksps 10MB/s 1-800-4-LINEAR operation of cd4047 inverters number of turns of ferrite antenna at 125khz lt1558 LTC1632 LT1270 LT1317 LT1533 LTC1418 LTC1427-50 LTC1562

    PIN CONFIGURATION IC CD4047

    Abstract: equivalent sd 4841 Mark Alexander A Current Feedback Audio Power Amp inverter circuit diagram using cd4047 LT1387 2N4957 model spice diagram sharp alexander TV circuits pin of ic cd4047 CD4047 application note cd4047 spice
    Text: LINEAR TECHNOLOGY VOLUME VII NUMBER 1 FEBRUARY 1997 IN THIS ISSUE . . . COVER ARTICLE The New LT 1425 Isolated Flyback Controller . 1 Kurk Matthews The New LT1425 Isolated Flyback Controller Issue Highlights .2 by Kurk Matthews


    Original     		PDF LT1425 LT1328: 1-800-4-LINEAR PIN CONFIGURATION IC CD4047 equivalent sd 4841 Mark Alexander A Current Feedback Audio Power Amp inverter circuit diagram using cd4047 LT1387 2N4957 model spice diagram sharp alexander TV circuits pin of ic cd4047 CD4047 application note cd4047 spice

    car subwoofer amplifier schematic circuit diagram

    Abstract: CAR SUBWOOFER 200W AMP car 12 volts amplifier mosfet 200w rms 12v subwoofer car amp circuits 12v 50 watt subwoofer shan circuit diagram 12v 200W subwoofer CIRCUIT DIAGRAM subwoofer 1000 watts amplifier subwoofer Amplifier 200w schematic diagrams 12v subwoofer amp circuits IRF9640 LT1210
    Text: LINEAR TECHNOLOGY AUGUST 1996 IN THIS ISSUE . . . COVER ARTICLE Safe Hot Swapping Using the LTC 1421 . 1 Robert Reay and James Herr VOLUME VI NUMBER 3 Safe Hot Swapping Using the LTC1421 by Robert Reay and James Herr Issue Highlights . 2


    Original     		PDF LTC1421 LTC1433/LTC1434: LTC1343 LTC1344 DB-25 S-191 1-800-4-LINEAR car subwoofer amplifier schematic circuit diagram CAR SUBWOOFER 200W AMP car 12 volts amplifier mosfet 200w rms 12v subwoofer car amp circuits 12v 50 watt subwoofer shan circuit diagram 12v 200W subwoofer CIRCUIT DIAGRAM subwoofer 1000 watts amplifier subwoofer Amplifier 200w schematic diagrams 12v subwoofer amp circuits IRF9640 LT1210

    schematic diagram inverter 5000w

    Abstract: power amplifier 5000W with PCB schematic diagram inverter 5000w USING MOSFET 5000w power amplifier circuit diagram 5000w audio amplifier circuit diagram 12v 5000W AUDIO AMPLIFIER CIRCUIT DIAGRAM 5000w two transistor forward converter 5 channels 5000w audio amplifier circuit diagram 5000w mosfet power amplifier circuit diagram Sony Semiconductor Replacement Handbook 1991
    Text: LINEAR TECHNOLOGY SEPTEMBER 1999 IN THIS ISSUE… Four New Amplifiers Serve Many Applications . 1 Issue Highlights . 2 LTC in the News… . 2 DESIGN FEATURES JFET Op Amps Equal Low Noise


    Original     		PDF 100MHz, 300MHz S-191 1-800-4-LINEAR schematic diagram inverter 5000w power amplifier 5000W with PCB schematic diagram inverter 5000w USING MOSFET 5000w power amplifier circuit diagram 5000w audio amplifier circuit diagram 12v 5000W AUDIO AMPLIFIER CIRCUIT DIAGRAM 5000w two transistor forward converter 5 channels 5000w audio amplifier circuit diagram 5000w mosfet power amplifier circuit diagram Sony Semiconductor Replacement Handbook 1991

    schematic diagram 48V solar charge controller

    Abstract: cd4051 spice D link schematic circuit diagram adsl modem board solar charger schematic 12V automatic visitor counter system circuit diagram schematic diagram 48V solar controller solar inverters schematic diagram LM733 spice 17555 Timer LTC1406
    Text: LINEAR TECHNOLOGY MAY 1998 IN THIS ISSUE… COVER ARTICLE LTC 1406: 8-bit, 20MHz ADC Offers 250MHz Input Bandwidth and Tiny Footprint . 1 Jeff Huehn Issue Highlights . 2 LTC in the News . 2


    Original     		PDF 20MHz 250MHz LTC1710: 100kPte. S-191 1-800-4-LINEAR schematic diagram 48V solar charge controller cd4051 spice D link schematic circuit diagram adsl modem board solar charger schematic 12V automatic visitor counter system circuit diagram schematic diagram 48V solar controller solar inverters schematic diagram LM733 spice 17555 Timer LTC1406

    hcl laptop MOTHERBOARD CIRCUIT diagram

    Abstract: charging ic laptop motherboard laptop Lithium-ion battery diagram schematic VRM Section of laptop Motherboard LTC1069-X advantages of battery charging circuit using scr over other battery chargers LT1170 boost converter 12v dc input 19.5 v SD card connector LTC1409 LTC1430
    Text: LINEAR TECHNOLOGY DECEMBER 1996 IN THIS ISSUE . . . COVER ARTICLE LTC 1409/LTC1415 High Speed, Low Power 12-Bit ADCs . 1 Kevin R. Hoskins Issue Highlights . 2 LTC in the News . 2 DESIGN FEATURES LTC1553 Synchronous Regulator


    Original     		PDF 1409/LTC1415 12-Bit LTC1553 1575/LT1577 LTC1479 H2-562-2285 1-800-4-LINEAR hcl laptop MOTHERBOARD CIRCUIT diagram charging ic laptop motherboard laptop Lithium-ion battery diagram schematic VRM Section of laptop Motherboard LTC1069-X advantages of battery charging circuit using scr over other battery chargers LT1170 boost converter 12v dc input 19.5 v SD card connector LTC1409 LTC1430

    schematic diagram inverter 5000w

    Abstract: schematic diagram inverter 5000w USING MOSFET 12v 5000W AUDIO AMPLIFIER CIRCUIT DIAGRAM 5000w audio amplifier circuit diagram 5000w mosfet power amplifier circuit diagram power amplifier 5000W with PCB 5000w power amplifier circuit diagram 5000w two transistor forward converter 5 channels 5000w audio amplifier circuit diagram 5000w power inverter circuit diagram
    Text: LINEAR TECHNOLOGY TECHNOLOG TECHNOLOGY SEPTEMBER 1999 IN THIS ISSUE… Four New Amplifiers Serve Many Applications . 1 Issue Highlights . 2 LTC in the News… . 2 DESIGN FEATURES JFET Op Amps Equal Low Noise


    Original     		PDF 100MHz, 300MHz S-191 1-800-4-LINEAR schematic diagram inverter 5000w schematic diagram inverter 5000w USING MOSFET 12v 5000W AUDIO AMPLIFIER CIRCUIT DIAGRAM 5000w audio amplifier circuit diagram 5000w mosfet power amplifier circuit diagram power amplifier 5000W with PCB 5000w power amplifier circuit diagram 5000w two transistor forward converter 5 channels 5000w audio amplifier circuit diagram 5000w power inverter circuit diagram

    hcl laptop MOTHERBOARD CIRCUIT diagram

    Abstract: charging ic laptop motherboard VRM Section of laptop Motherboard intel core i3 laptop MOTHERBOARD CIRCUIT diagram Laptop AC adapter 19V laptop Lithium-ion battery diagram schematic IBM t 42 laptop ac adapter schematics diagram HCL Notebook motherboard schematic laptop motherboard schematic ALL LAPTOP MOTHERBOARD CIRCUIT DIAGRAM
    Text: LINEAR TECHNOLOGY DECEMBER 1996 IN THIS ISSUE . . . COVER ARTICLE LTC 1409/LTC1415 High Speed, Low Power 12-Bit ADCs . 1 Kevin R. Hoskins Issue Highlights . 2 LTC in the News . 2 DESIGN FEATURES LTC1553 Synchronous Regulator


    Original     		PDF 1409/LTC1415 12-Bit LTC1553 1575/LT1577 LTC1479 H2-562-2285 1-800-4-LINEAR hcl laptop MOTHERBOARD CIRCUIT diagram charging ic laptop motherboard VRM Section of laptop Motherboard intel core i3 laptop MOTHERBOARD CIRCUIT diagram Laptop AC adapter 19V laptop Lithium-ion battery diagram schematic IBM t 42 laptop ac adapter schematics diagram HCL Notebook motherboard schematic laptop motherboard schematic ALL LAPTOP MOTHERBOARD CIRCUIT DIAGRAM

    schematic diagram 48V solar charge controller

    Abstract: circuit diagram of line follower robot switched capacitor filter handbook mf10 2N3906 used in solar shunt charge controller schematic diagram 48V solar controller line follower robot without microcontroller 70V AC to 48v dc 40 amp converter circuit diagram solar charger schematic 12V flying robot with camera LT1206
    Text: LINEAR TECHNOLOGY AUGUST 1997 IN THIS ISSUE… COVER ARTICLE The LT 1533 Heralds a New Class of Low Noise Switching Regulators . 1 Jeff Witt Issue Highlights .2 VOLUME VII NUMBER 3 The LT1533 Heralds a


    Original     		PDF LT1533 LTC1067-50: LTC1422: LTC1626 1-800-4-LINEAR schematic diagram 48V solar charge controller circuit diagram of line follower robot switched capacitor filter handbook mf10 2N3906 used in solar shunt charge controller schematic diagram 48V solar controller line follower robot without microcontroller 70V AC to 48v dc 40 amp converter circuit diagram solar charger schematic 12V flying robot with camera LT1206

    SANYO 18650

    Abstract: 6cell battery connector detail LT1068-25 TC1627 schematic diagram of laptop inverter LT1604 laptop Lithium-ion battery diagram schematic Marcon capacitor Co LT1604 ADC LTC1643L
    Text: LINEAR TECHNOLOGY AUGUST 1998 IN THIS ISSUE… COVER ARTICLE The LTC 1625 Current Mode DC/DC Controller Eliminates the Sense Resistor . 1 Christopher B. Umminger Issue Highlights . 2 LTC in the News… . 2


    Original     		PDF LTC1627 1-800-4-LINEAR SANYO 18650 6cell battery connector detail LT1068-25 TC1627 schematic diagram of laptop inverter LT1604 laptop Lithium-ion battery diagram schematic Marcon capacitor Co LT1604 ADC LTC1643L

    AUTOMATIC ROOM LIGHT CONTROLLER with visitor counter

    Abstract: schematic diagram 48V solar charge controller solar inverters schematic diagram 555 timer for buck boost converter flash schematic diagram inverter 12v to 24v 30a resonant self oscillation half bridge LED ballast solar charger schematic 24V 48v battery charger schematic diagram Siliconix DataBook circuit diagram for 48v automatic battery charger
    Text: LINEAR TECHNOLOGY FEBRUARY 2001 IN THIS ISSUE… COVER ARTICLE New 5-Lead SOT-23 Oscillator is Small, Very Stable and Easy to Use . 1 Andy Crofts Issue Highlights . 2 VOLUME XI NUMBER 1


    Original     		PDF OT-23 OT-23 D-59387 D-70567 AUTOMATIC ROOM LIGHT CONTROLLER with visitor counter schematic diagram 48V solar charge controller solar inverters schematic diagram 555 timer for buck boost converter flash schematic diagram inverter 12v to 24v 30a resonant self oscillation half bridge LED ballast solar charger schematic 24V 48v battery charger schematic diagram Siliconix DataBook circuit diagram for 48v automatic battery charger

    capacitor 474k 400v

    Abstract: weller soldering station pe-6197 12v dc cdi schematic diagram switched capacitor filter handbook mf10 jim williams ccfl transistor equivalent book FOR D 1047 e bike motor controller 12v dc cdi schematic diagram for cdi MBR115P
    Text: LINEAR TECHNOLOGY JUNE 1992 IN THIS ISSUE . . . COVER ARTICLE Introducing the LT1227: A Video Amplifier for All Seasons . 1 William H. Gross Editor's Page . 2 VOLUME II NUMBER 2 Introducing the LT1227: A Video Amplifier for All Seasons by William H. Gross


    Original     		PDF LT1227: LTC1153 LTC1063 LTC1047: capacitor 474k 400v weller soldering station pe-6197 12v dc cdi schematic diagram switched capacitor filter handbook mf10 jim williams ccfl transistor equivalent book FOR D 1047 e bike motor controller 12v dc cdi schematic diagram for cdi MBR115P

    panasonic inverter dv 707 manual

    Abstract: 48v battery charger schematic diagram 12v step-down transformer operations files IBM R 31 laptop ac adapter schematics diagram schematic diagram of laptop inverter motorola power fet rf databook panasonic inverter manual dv 707 apple laptop battery pinout lcd inverter sumida notebook schematic samsung laptop battery pinout
    Text: LINEAR TECHNOLOGY NOVEMBER 1999 IN THIS ISSUE… COVER ARTICLE SOT-23 Micropower, Rail-to-Rail Op Amps Operate with Inputs above the Positive Supply . 1 Raj Ramchandani Issue Highlights . 2 LTC in the News… . 2


    Original     		PDF OT-23 LTC1755 1-800-4-LINEAR panasonic inverter dv 707 manual 48v battery charger schematic diagram 12v step-down transformer operations files IBM R 31 laptop ac adapter schematics diagram schematic diagram of laptop inverter motorola power fet rf databook panasonic inverter manual dv 707 apple laptop battery pinout lcd inverter sumida notebook schematic samsung laptop battery pinout

    irf3205 pspice

    Abstract: tokin 473 5.5v tokin lcd inverter irf3205 pinout STR Handbook, General electric snubber IRF3205 AD7543 IRF3205 501-0726 lt1339 application note inverter tokin lcd nec
    Text: LINEAR TECHNOLOGY NOVEMBER 1997 IN THIS ISSUE… COVER ARTICLE New 16-Bit SO-8 DAC Has 1LSB Max INL and DNL Over Industrial Temperature . 1 Jim Brubaker and William C. Rempfer Issue Highlight . 2 LTC in the News . 2


    Original     		PDF 16-Bit 500kHz, LT1581 LT1370: LTC1504: 500mA 1-800-4-LINEAR irf3205 pspice tokin 473 5.5v tokin lcd inverter irf3205 pinout STR Handbook, General electric snubber IRF3205 AD7543 IRF3205 501-0726 lt1339 application note inverter tokin lcd nec

    inverter charger

    Abstract: LTC1759 LT1461 circuit diagram of smart home alarm system linear ramp technique dvm principle working LT1306 LT1782 LT1783 LTC1642 LTC1755
    Text: LINEAR TECHNOLOGY TECHNOLOG TECHNOLOGY NOVEMBER 1999 IN THIS ISSUE… COVER ARTICLE SOT-23 Micropower, Rail-to-Rail Op Amps Operate with Inputs above the Positive Supply . 1 Raj Ramchandani Issue Highlights . 2


    Original     		PDF OT-23 LTC1755 1-800-4-LINEAR inverter charger LTC1759 LT1461 circuit diagram of smart home alarm system linear ramp technique dvm principle working LT1306 LT1782 LT1783 LTC1642

    Dittmer RTD

    Abstract: sp 201 adsl splitter circuit diagram sp 201 adsl splitter LTC2400 rtd D link schematic circuit diagram adsl modem board ADSL Central Office CO Chipset RSB 7900 Implementation of qam on TMS320C54x international rectifier databook SAMSUNG ADAPTER 19v
    Text: LINEAR TECHNOLOGY FEBRUARY 2000 IN THIS ISSUE… COVER ARTICLE 1- and 2-Channel, No Latency ∆Σ, 24-Bit ADCs Easily Digitize a Variety of Sensors . 1 Michael K. Mayes and Derek Redmayne Issue Highlights . 2 LTC in the News… . 2


    Original     		PDF 24-Bit OT-23 24-Bit 1-800-4-LINEAR Dittmer RTD sp 201 adsl splitter circuit diagram sp 201 adsl splitter LTC2400 rtd D link schematic circuit diagram adsl modem board ADSL Central Office CO Chipset RSB 7900 Implementation of qam on TMS320C54x international rectifier databook SAMSUNG ADAPTER 19v

    inverter ccfl SP 5001 IC INVERTER

    Abstract: hcl laptop inverter board schematic SP 5001 IC INVERTER Coin Based Mobile Phone Charger 4S 16.8V 12A Li-ion Battery Circuit Board laptop adapter circuit by delta electronics 77206-A7 schematic diagram of laptop inverter 12v to 1000v inverters circuit diagrams la 7522 circuit basics
    Text: LINEAR TECHNOLOGY VOLUME IX NUMBER 1 FEBRUARY 1999 IN THIS ISSUE… COVER ARTICLE Third-Generation DC/DC Controller Reduces Size and Cost . 1 Randy G. Flatness Issue Highlights . 2 LTC in the News . 2


    Original     		PDF OT-23 16-Bit 1-800-4-LINEAR inverter ccfl SP 5001 IC INVERTER hcl laptop inverter board schematic SP 5001 IC INVERTER Coin Based Mobile Phone Charger 4S 16.8V 12A Li-ion Battery Circuit Board laptop adapter circuit by delta electronics 77206-A7 schematic diagram of laptop inverter 12v to 1000v inverters circuit diagrams la 7522 circuit basics