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

    C3906 Search Results

    C3906 Result Highlights (5)

    Part ECAD Model Manufacturer Description Download Buy
    UC3906N Texas Instruments Linear Lead-Acid Battery Charger 16-PDIP -20 to 70 Visit Texas Instruments Buy
    UC3906DW Texas Instruments Linear Lead-Acid Battery Charger 16-SOIC -20 to 70 Visit Texas Instruments Buy
    UC3906DWG4 Texas Instruments Linear Lead-Acid Battery Charger 16-SOIC -20 to 70 Visit Texas Instruments
    UC3906DWTR Texas Instruments Linear Lead-Acid Battery Charger 16-SOIC -20 to 70 Visit Texas Instruments
    UC3906NG4 Texas Instruments Linear Lead-Acid Battery Charger 16-PDIP -20 to 70 Visit Texas Instruments
    SF Impression Pixel

    C3906 Price and Stock

    Holy Stone Enterprise Co Ltd SCC3906X221K8C2TZ

    CAP CER 220PF 400VAC X1/Y1 X7R 3
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SCC3906X221K8C2TZ Reel 3,000 1,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.2424
    • 10000 $0.20453
    		Buy Now
    SCC3906X221K8C2TZ Cut Tape 3,000 1
    • 1 $0.72
    • 10 $0.504
    • 100 $0.3454
    • 1000 $0.28784
    • 10000 $0.28784
    		Buy Now
    SCC3906X221K8C2TZ Digi-Reel 3,000 1
    • 1 $0.72
    • 10 $0.504
    • 100 $0.3454
    • 1000 $0.28784
    • 10000 $0.28784
    		Buy Now

    Texas Instruments UC3906DWTR

    IC BATT CHG LEAD ACID 16SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey UC3906DWTR Digi-Reel 1,197 1
    • 1 $8.38
    • 10 $6.274
    • 100 $5.1659
    • 1000 $4.58487
    • 10000 $4.58487
    		Buy Now
    UC3906DWTR Cut Tape 1,197 1
    • 1 $8.38
    • 10 $6.274
    • 100 $5.1659
    • 1000 $4.58487
    • 10000 $4.58487
    		Buy Now
    Mouser Electronics UC3906DWTR
    • 1 $7.77
    • 10 $7.03
    • 100 $5.82
    • 1000 $4.41
    • 10000 $4.24
    		Get Quote
    Win Source Electronics UC3906DWTR 33,752
    • 1 -
    • 10 $7.913
    • 100 $5.276
    • 1000 $5.276
    • 10000 $5.276
    		Buy Now

    Holy Stone Enterprise Co Ltd SCC3906X331K8C2TS

    CAP CER 330PF 400VAC X1/Y1 X7R 3
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SCC3906X331K8C2TS Cut Tape 938 1
    • 1 $0.67
    • 10 $0.47
    • 100 $0.3224
    • 1000 $0.26866
    • 10000 $0.26866
    		Buy Now

    Holy Stone Enterprise Co Ltd SCC3906X331K8C2TZ

    CAP CER 330PF 400VAC X1/Y1 X7R 3
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SCC3906X331K8C2TZ Digi-Reel 900 1
    • 1 $0.72
    • 10 $0.504
    • 100 $0.3454
    • 1000 $0.28784
    • 10000 $0.28784
    		Buy Now
    SCC3906X331K8C2TZ Cut Tape 900 1
    • 1 $0.72
    • 10 $0.504
    • 100 $0.3454
    • 1000 $0.28784
    • 10000 $0.28784
    		Buy Now

    Holy Stone Enterprise Co Ltd SCC3906X101K8C2TS

    CAP CER 100PF 400VAC X1/Y1 X7R 3
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SCC3906X101K8C2TS Digi-Reel 798 1
    • 1 $0.62
    • 10 $0.437
    • 100 $0.2994
    • 1000 $0.24948
    • 10000 $0.24948
    		Buy Now
    SCC3906X101K8C2TS Cut Tape 798 1
    • 1 $0.62
    • 10 $0.437
    • 100 $0.2994
    • 1000 $0.24948
    • 10000 $0.24948
    		Buy Now
    Find more C3906 price and stock on Findchips.com

    C3906 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    RTL8211E

    Abstract: ISL6258A 88E1116R Marvell 88E1116R ISL6258 RTL8211 L6703 u9701 MCP79-B01 Q7055
    Text: 8 6 7 2 3 4 5 1 CK APPD 1. ALL RESISTANCE VALUES ARE IN OHMS, 0.1 WATT +/- 5%. 2. ALL CAPACITANCE VALUES ARE IN MICROFARADS. 3. ALL CRYSTALS & OSCILLATOR VALUES ARE IN HERTZ. REV SCHEM,MBP 15"MLB ZONE ECN ENG APPD DESCRIPTION OF CHANGE DATE ? ? ? ? DATE ?


    Original     		PDF ISL10 ISL11 RTL8211E ISL6258A 88E1116R Marvell 88E1116R ISL6258 RTL8211 L6703 u9701 MCP79-B01 Q7055

    attansic f1

    Abstract: RC415M Attansic l1 RC415ME asus attansic lan schematic Attansic f2 PAD381 PT6319 d1106
    Text: 5 4 3 F5R BLOCK DIAGRAM 2 1 CPU Yonah Single core Yonah Celeron D D Page 2 AGTL+ 133/166MHz LVDS Page 10 DDR2 533/667 RC415ME CRT Single Channel PCIE Page 11 DUAL DDR2 SO-DIMM Page 12,13,14 Page 5,6,7,8,9 PCIE X4 C C MINICARD SB600 Page 28 LAN 10/100 ATTANSIC L2


    Original     		PDF 133/166MHz RC415ME SB600 33MHz ITE8510E ICS951463AGLFT L78L05 F02JK2E) LM4040BIM SI9183DT attansic f1 RC415M Attansic l1 RC415ME asus attansic lan schematic Attansic f2 PAD381 PT6319 d1106

    IT8511TE

    Abstract: asus C5915 IT8511 C3923 J6801 c7319 R5707 T8-232 T2448
    Text: 5 01 D C B A 4 Block Diagram 61 02 System Setting 62 USB CONN 03 * 63 * 04 04_CPU-Merom HOST 64 ISA ROM 05 05_CPU-Merom(PWR) 65 SPI ROM 06 * 66 LED 07 07_CRESTLINE(HOST) 67 * 08 08_CRESTLINE(DMI & CFG) 68 DC & BAT IN 09 09_CRESTLINE(GRAPHIC) 69 * 10 10_CRESTLINE(DDR2)


    Original     		PDF M7X/66-M GEN-ICS9LPR363AGLF-T C7310 C7320, C7321. Q4401 IT8511TE asus C5915 IT8511 C3923 J6801 c7319 R5707 T8-232 T2448

    Attansic L1

    Abstract: pr6239 RC415M RC415ME ICS951463AGLFT ASUS attansic f1 RTS5117 C3902 ICS951463
    Text: 5 4 3 F5R BLOCK DIAGRAM 2 1 CPU Yonah Single core Yonah Celeron D D Page 2 AGTL+ 133/166MHz LVDS Page 10 DDR2 533/667 RC415ME CRT Single Channel PCIE Page 11 DUAL DDR2 SO-DIMM Page 12,13,14 Page 5,6,7,8,9 PCIE X4 C C MINICARD SB600 Page 28 LAN 10/100 ATTANSIC L2


    Original     		PDF 133/166MHz RC415ME SB600 33MHz ITE8510E ICS951463AGLFT BLU45 SI9183DT TPS51020 PMN45EN Attansic L1 pr6239 RC415M RC415ME ICS951463AGLFT ASUS attansic f1 RTS5117 C3902 ICS951463

    Attansic L1

    Abstract: IT8511TE ALC660 bd3702 c5914 c5803 cd3102 asus attansic f1 C4422
    Text: 5 Block Diagram 61 02 System Setting 62 C * 63 * 04_CPU-Merom HOST 64 ISA ROM 05 05_CPU-Merom(PWR) 65 SPI ROM * 66 07_CRESTLINE(HOST) 67 * 08 08_CRESTLINE(DMI & CFG) 68 DC & BAT IN 09 09_CRESTLINE(GRAPHIC) 69 * 10 10_CRESTLINE(DDR2) 70 Debug CONN. 11 11_CRESTLINE(PWR)


    Original     		PDF GEN-ICS9LPR363AGLF-T CARD1394-R5C833 CODEC-ALC660 IT8511TE 6C28T T9302 TPC28T T9304 Attansic L1 ALC660 bd3702 c5914 c5803 cd3102 asus attansic f1 C4422

    rtl8112

    Abstract: ALC662 K40IN UP7711U8 realtek 8112 RT8206A samsung nc108 MCP75 LC37 control key board up7711
    Text: 5 4 K40IN BLOCK DIAGRAM 3 2 1 CPU MERON;PENRYN XDP D Discharge Circuit Page 67 Page 3~5 D FSB 800MHz;1066MHz Thermal Sensor LCD Panel Page 45 PWM Fan DC Conn. Page 60 Page 50 Onboard DRAM Page 46 Page 41 Page 50 Page 6,8~9 CRT Switch & LED Maxim MAX6657 DDRII So-DIMMx2


    Original     		PDF K40IN 800MHz 1066MHz MAX6657 MCP75 05VSUS TPS51116 ISL6266 BSC889N03MS BSC882N03MS rtl8112 ALC662 UP7711U8 realtek 8112 RT8206A samsung nc108 MCP75 LC37 control key board up7711

    IT8511TE

    Abstract: asus 6C720 AC_IN_OC 498C0 IT8511 R5538 ALC660 U5403 ICS9LPR363AGLFT
    Text: 5 01 D B A 61 02 System Setting 62 USB CONN * 63 * 04 04_CPU-Merom HOST 64 ISA ROM 05 05_CPU-Merom(PWR) 65 SPI ROM 06 * 66 LED 07 07_CRESTLINE(HOST) 67 * 08 08_CRESTLINE(DMI & CFG) 68 DC & BAT IN 09 09_CRESTLINE(GRAPHIC) 69 * 10 10_CRESTLINE(DDR2) 70 Debug CONN.


    Original     		PDF M82-ME R9403 R5914 U5403 C5403 R5404 si4392 IT8511TE asus 6C720 AC_IN_OC 498C0 IT8511 R5538 ALC660 U5403 ICS9LPR363AGLFT

    AR8121-AL1E

    Abstract: IT8502 IT8502E 2822A RT8206A SLB95 cantiga gl40 CX20582 maa7824 mb39a132
    Text: 5 D C B A 4 01 Block Diagram 61 02 System Setting 62 USB CONN 03 POWER SEQUENCE 63 * 04 CPU-Penryn HOST 64 * 05 CPU-Penryn(PWR) 65 06 * 66 * 07 Cantiga(HOST) 67 DEBUG CONN 08 Cantiga(DMI & CFG) 68 DC & BAT IN 09 Cantiga(GRAPHIC) 69 * 10 Cantiga(DDR2) 70 *


    Original     		PDF IT8512E-L CX20582 GEN-ICS9LPR363DGLF-T RTL8111C RT9043-GB TPS51117 APL5913 TPS51116 ISL6262A AR8121-AL1E IT8502 IT8502E 2822A RT8206A SLB95 cantiga gl40 maa7824 mb39a132

    X51L

    Abstract: 12c5202 Asus T0327 C3203 12G17000004J C0820 diode ICS9LPR363DGLF-T MW772 C0821
    Text: 5 4 3 2 1 X51L Main BD. R2.0 BLOCK DIAGRAM CLOCK GEN. ICS9LPR363CGLF-T D D Merom CPU PAGE 29 FAN + Thermal sensor 478B uFCPGA PAGE 3,4 PAGE 50 FSB 800 MHz LVDS PAGE 46 CRT CRESTLINE 960GL PAGE 45 SiI1368 SDVO to LPFQ48 DVI DVI PAGE 45 C DDR-II SO-DIMM X 2


    Original     		PDF ICS9LPR363CGLF-T SiI1368 LPFQ48 960GL 667MHz ALC660 10/100LAN RTL8100CL PMN45EN FDW2501 X51L 12c5202 Asus T0327 C3203 12G17000004J C0820 diode ICS9LPR363DGLF-T MW772 C0821

    asus F3J inverter

    Abstract: T3509 schematic asus f3j inverter ALC660 asus f3j c2406 diode R5538D001 asus F3J Power inverter C2407 ASUS
    Text: A B C D E F2J SCHEMATIC R11 ER Content PAGE 1 2 3 4 PAGE SYSTEM PAGE REF. 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 YONAH CPU (1) YONAH CPU (2) CPU CAP/THERMAL SENSOR CLOCK GEN.


    Original     		PDF RTL8111B asus F3J inverter T3509 schematic asus f3j inverter ALC660 asus f3j c2406 diode R5538D001 asus F3J Power inverter C2407 ASUS

    LCD Inverter board A6J

    Abstract: R2521 345 ce304 ASUS hy5ps561621afp-25 t5810 cpu Yonah-2M isl6227caz ISL6262CRZ A6J inverter board
    Text: 5 4 3 2 1 A6J Block Diagram Power On Sequence PAGE 34,35 CPU VCORE SYSTEM PWR D FAN + SENSOR CPU YONAH-2M PAGE ? PAGE ? D PAGE 4 PAGE 2,3 BAT & CHARGER PAGE ? FSB 667MHz VGACore PAGE ? MCH-M Calistoga 945PM LVDS & INV PAGE 18 ATI M56P CLOCK GEN PAGE5 PCI-E 16X


    Original     		PDF 667MHz 945PM RTL8111B 33MHz KBC38857 JP6303 LCD Inverter board A6J R2521 345 ce304 ASUS hy5ps561621afp-25 t5810 cpu Yonah-2M isl6227caz ISL6262CRZ A6J inverter board

    panasonic C5622

    Abstract: SR35-15 it8511te DT2801 panasonic c5904 it8511 F3Sc F3Sv asus c2874 f3sc
    Text: 5 D Block Diagram 61 02 System Setting 62 03 * 63 * 04_CPU-Merom HOST 64 ISA ROM 05 05_CPU-Merom(PWR) 65 * 06 * 66 LED B 07_CRESTLINE(HOST) 08 08_CRESTLINE(DMI & CFG) 68 DC & BAT IN 09_CRESTLINE(GRAPHIC) 69 * 70 Debug CONN. 11 11_CRESTLINE(PWR) 71 * 12 12_CRESTLINE(PWR2)


    Original     		PDF GEN-ICS9LPR363AGLF-T ISL6260C panasonic C5622 SR35-15 it8511te DT2801 panasonic c5904 it8511 F3Sc F3Sv asus c2874 f3sc

    MCP79MXT-B3

    Abstract: ISL6258A ti c3931 u9701 rtl8211* Reference design L6703 C3931 88E1116R FW643E CS4206A
    Text: 8 6 7 2 3 4 5 1 CK APPD 1. ALL RESISTANCE VALUES ARE IN OHMS, 0.1 WATT +/- 5%. 2. ALL CAPACITANCE VALUES ARE IN MICROFARADS. 3. ALL CRYSTALS & OSCILLATOR VALUES ARE IN HERTZ. REV SCHEM,CORNHOLE,K19 ZONE ECN ENG APPD DESCRIPTION OF CHANGE DATE ? ? ? ? DATE


    Original     		PDF ISL10 ISL11 MCP79MXT-B3 ISL6258A ti c3931 u9701 rtl8211* Reference design L6703 C3931 88E1116R FW643E CS4206A

    L6703

    Abstract: ISL9504 ntc 10d-7 55D8 55B3 sot23-5 32 pin Mini-DVI to VGA connector PP3V42G3H 31d6 D7950 J5550
    Text: 8 6 7 2 3 4 5 1 CK APPD 1. ALL RESISTANCE VALUES ARE IN OHMS, 0.1 WATT +/- 5%. 2. ALL CAPACITANCE VALUES ARE IN MICROFARADS. 3. ALL CRYSTALS & OSCILLATOR VALUES ARE IN HERTZ. K36 MLB SCHEMATIC REV ZONE ECN ENG APPD DESCRIPTION OF CHANGE DATE ? ? ? ? DATE ?


    Original     		PDF ITP700FLEX L6703 ISL9504 ntc 10d-7 55D8 55B3 sot23-5 32 pin Mini-DVI to VGA connector PP3V42G3H 31d6 D7950 J5550

    F3J inverter board

    Abstract: D9302 it8511te F3J inverter IT8511 a2051 asus c5121 00 F3J INVERTER CABLE Intel t9300
    Text: 5 Block Diagram 61 02 System Setting 62 C * 63 * 04_CPU-Merom HOST 64 ISA ROM 05 05_CPU-Merom(PWR) 65 SPI ROM * 66 B A GDDR2 32Mx16 x4 07_CRESTLINE(HOST) 67 * 08 08_CRESTLINE(DMI & CFG) 68 DC & BAT IN 09 09_CRESTLINE(GRAPHIC) 69 * 10 10_CRESTLINE(DDR2) 70


    Original     		PDF M7X/66-M GEN-ICS9LPR363AGLF-T 05G001405010 GPIO12 C2940 R1761 F3J inverter board D9302 it8511te F3J inverter IT8511 a2051 asus c5121 00 F3J INVERTER CABLE Intel t9300

    cx20582

    Abstract: IT8512E-L MAX17033 Conexant CX20582-10z MAX17033G T4610 CX20582-10z asus C4429 circuit max17031e
    Text: 5 D C B A 4 01 Block Diagram 61 02 System Setting 62 USB CONN 03 POWER SEQUENCE 63 * 04 CPU-Penryn HOST 64 * 05 CPU-Penryn(PWR) 65 06 * 66 * 07 Cantiga(HOST) 67 DEBUG CONN 08 Cantiga(DMI & CFG) 68 DC & BAT IN 09 Cantiga(GRAPHIC) 69 * 10 Cantiga(DDR2) 70 *


    Original     		PDF IT8512E-L CX20582 GEN-ICS9LPR363DGLF-T RTL8111C R8720 D8701 L8300 R8200 CE8000 MAX17033 Conexant CX20582-10z MAX17033G T4610 CX20582-10z asus C4429 circuit max17031e

    c2458

    Abstract: samsung nc110 CN1801B Asus samsung nc108 asus a6j R2004 t12j CN1801A INVERTER BOARD Asus A6
    Text: 5 4 3 2 T12J Block Diagram 1 CPU CLOCK GEN YONAH MEROM 31W 34W ICS 954310 PAGE 29 PAGE 3,4 D GDDR2 32Mx16 x4 PAGE 23 Discharge D THERMAL CONTROL ADT7473ARQZ PSB 667MHz PAGE 28 PAGE 30 LCD Switch & LED PAGE 24 DCIN & BAT Connector PAGE 45 PCI-E X16 Nvidia G72M-V


    Original     		PDF 32Mx16 667MHz ADT7473ARQZ G72M-V 945PM SLB9635 PD5502 PD5503 PD5503 c2458 samsung nc110 CN1801B Asus samsung nc108 asus a6j R2004 t12j CN1801A INVERTER BOARD Asus A6

    IT8712F-A

    Abstract: C4161 asus t6322 CE501 ITE8712 C2625 T6311 cm8562gi VP1010
    Text: 5 4 3 2 A7T/M BLOCK DIAGRAM CPU CORE PWR D Dual Channel DDR2 DDR2 REV.F PAGE 61 1 01_BLOCK DIAGRAM 41_G73M_PCIEX16_1 02_AMD S1 CPU 1 42_G73M_PCIEX16_2 03_AMD S1 CPU(2) 43_G73M_DISPLAY 04_AMD S1 CPU(3) 44_G73M_BIOS&CRY 05_DDR2_SO_DIMM-1 45_G73M_GPIO 06_DDR2_SO_DIMM-2


    Original     		PDF PCIEX16 PIC16C54 HT800MHz 10G213365213010 R6809 10G213402213030 R6815 10G213243213030 R6807 IT8712F-A C4161 asus t6322 CE501 ITE8712 C2625 T6311 cm8562gi VP1010

    NPCE781BA0DX

    Abstract: nuvoton NPCE781BA0DX 92HD79B1a5 92HD79B1 NPCE781 TPS51611 NPCE781B UP7534BRA8 npce781ba G7922R61U
    Text: 5 4 3 2 1 D D Berry DG15 Discrete/UMA Schematics Document Arrandale Intel PCH C C 2010-02-03 REV : A00 DY :None Installed UMA:UMA platform installed PARK:DIS PARK platform installed M96:DIS M96 platform installed VRAM_1G:VRAM 128M*16 installed Colay :Manual modify BOM


    Original     		PDF 512MB 64Mx16b C995R GPIO45 650ms NPCE781BA0DX nuvoton NPCE781BA0DX 92HD79B1a5 92HD79B1 NPCE781 TPS51611 NPCE781B UP7534BRA8 npce781ba G7922R61U

    south bridge SIS 968

    Abstract: C4833 U2401B R4727 Sis 968 C2237 C5902 C2238 SIS671DX C8208
    Text: 5 4 3 Clock GEN D D FSB 533/667 LCD LVDS RGB DVI 1 Thermal CPU YONAH CRT 2 ATI M64-M PCIE 0-15 TMDS North Bridge Sis 671DX DDR2 SO-DIMM1 DDR2 SO-DIMM2 MuTIOL 1G TPM C 533/667 Mhz LPC Debug CON EC ITE8510E PATA South Bridge Sis 968 SATA C ODD HDD USB CCD PCI


    Original     		PDF M64-M 671DX ITE8510E 10/100M RTL8100CL RTS5117 ALC660D FDW2501 MIC5235 SI4800BDY south bridge SIS 968 C4833 U2401B R4727 Sis 968 C2237 C5902 C2238 SIS671DX C8208

    UC2906 UC3906

    Abstract: No abstract text available
    Text: y U C2906 U C3906 U N IT R O D E Sealed Lead-Acid Battery Charger FEATURES D E S C R IP T IO N • Optimum Control for Maximum Battery Capacity and Lite • Internal State Logic Provides Three Charge States • Precision Reference Tracks Battery Requirements Over


    OCR Scan     		PDF C2906 C3906 UC2906 001b445 UC2906 UC3906

    max2906

    Abstract: UC2906 UC3906 sealed lead-acid battery charger
    Text: y c m c 5 ? 4 TE D U C 2 9 0 6 U N IT R Q D E U C3906 Sealed Lead-Acid Battery Charger FEATURES • Optimum control for maximum battery capacity and life • Internal state logic provides three charge states • Precision reference tracks battery requirements over temperature


    OCR Scan     		PDF C3906 UC2906 max2906 UC2906 UC3906 sealed lead-acid battery charger

    C3906K

    Abstract: C4102
    Text: 2SA1579 / 2SA1514K 2SC4102 / C3906K Transistors I High-voltage Amplifier Transistor —120V, —50mA 2SA1579 / 2SA1514K + 0 A bsolute m axim um ratings ( 7 8 = 2 5 * 0 ) F e a tu r e s 1 ) High breakdown voltage. ( V c e o = — 120V) 2 ) C om plem ents the 2S C4102/2S C3906K.


    OCR Scan     		PDF 2SA1579 2SA1514K 2SC4102 2SC3906K --120V, --50mA) 2SA1514K C4102/2S C3906K C4102

    ABSTRACT FOR water level indicator using 4 led

    Abstract: sealed lead-acid battery charger UC2906 UC3906 3906 PNP 3906 npn EAGLE-PICHER INDUSTRIES U-104 lead acid overcharge protection circuit diagram abstract for water level indicator cells Yuasa
    Text: n INTEGRATED CIRCUITS U-104 • U N IT R O D E \PPLICATI0N NOTE IMPROVED CHARGING METHODS FOR LEAD-ACID BATTERIES USING THE C3906 ABSTRACT I r ;This paper describes the operation and application of the |rl C3906 Sealed Lead-Acid Battery Charger. This 1C proffvides reductions in the cost and design effort of implement­


    OCR Scan     		PDF U-104 UC3906 less-than-100% ABSTRACT FOR water level indicator using 4 led sealed lead-acid battery charger UC2906 UC3906 3906 PNP 3906 npn EAGLE-PICHER INDUSTRIES U-104 lead acid overcharge protection circuit diagram abstract for water level indicator cells Yuasa