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

    7824 A Search Results

    7824 A Datasheets (9)

    Part ECAD Model Manufacturer Description Datasheet Type PDF PDF Size Page count
    7824A1812-0
    TE Connectivity Raychem Cable Protection Cables, Wires - Coaxial Cables (RF) - COAX CABLE-TWINAXIAL Original PDF 72.19KB
    7824-A-256-AL
    RAF Electronic Hardware ROUND SWAGE STANDOFFPLAIN ALUMIN Original PDF 131.67MB
    7824-A-256-B
    RAF Electronic Hardware ROUND SWAGE STANDOFFPLAIN BRASS3 Original PDF 131.67MB
    7824-A-256-S
    RAF Electronic Hardware ROUND SWAGE STANDOFFPLAIN STEEL3 Original PDF 131.67MB
    7824-A-256-SS
    RAF Electronic Hardware ROUND SWAGE STANDOFFPLAIN STAINL Original PDF 131.67MB
    7824-A-440-AL
    RAF Electronic Hardware ROUND SWAGE STANDOFFPLAIN ALUMIN Original PDF 131.67MB
    7824-A-440-B
    RAF Electronic Hardware ROUND SWAGE STANDOFFPLAIN BRASS3 Original PDF 131.67MB
    7824-A-440-S
    RAF Electronic Hardware ROUND SWAGE STANDOFFPLAIN STEEL3 Original PDF 131.67MB
    7824-A-440-SS
    RAF Electronic Hardware ROUND SWAGE STANDOFFPLAIN STAINL Original PDF 131.67MB
    SF Impression Pixel

    7824 A Price and Stock

    Select Manufacturer

    STMicroelectronics L7824ABV

    IC REG LINEAR 24V 1.5A TO220
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey L7824ABV Tube 2,978 1
    • 1 $0.73
    • 10 $0.52
    • 100 $0.41
    • 1000 $0.35
    • 10000 $0.33
    Buy Now
    Avnet Americas L7824ABV Tube 8 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.29
    Buy Now
    Mouser Electronics L7824ABV 2,956
    • 1 $0.73
    • 10 $0.52
    • 100 $0.41
    • 1000 $0.33
    • 10000 $0.31
    Buy Now
    STMicroelectronics L7824ABV 2,956 1
    • 1 $0.72
    • 10 $0.51
    • 100 $0.40
    • 1000 $0.36
    • 10000 $0.36
    Buy Now
    TME L7824ABV 5,053 1
    • 1 $0.68
    • 10 $0.46
    • 100 $0.31
    • 1000 $0.30
    • 10000 $0.30
    Buy Now
    ComSIT USA () L7824ABV 305
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    L7824ABV 1,050
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Avnet Silica L7824ABV 22,350 9 Weeks 50
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    EBV Elektronik L7824ABV 9 Weeks 50
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    IBS Electronics L7824ABV 156,800 100
    • 1 -
    • 10 -
    • 100 $0.16
    • 1000 $0.15
    • 10000 $0.14
    Buy Now

    onsemi MC7824ACTG

    IC REG LINEAR 24V 1A TO220
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MC7824ACTG Tube 1,420 1
    • 1 $0.61
    • 10 $0.43
    • 100 $0.34
    • 1000 $0.29
    • 10000 $0.27
    Buy Now
    Avnet Americas () MC7824ACTG Bulk 1
    • 1 $0.84
    • 10 $0.61
    • 100 $0.45
    • 1000 $0.36
    • 10000 $0.36
    Buy Now
    MC7824ACTG Tube 9 Weeks 2,900
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.23
    Buy Now
    Mouser Electronics MC7824ACTG 1,762
    • 1 $0.61
    • 10 $0.43
    • 100 $0.34
    • 1000 $0.31
    • 10000 $0.28
    Buy Now
    Bristol Electronics MC7824ACTG 11
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Rochester Electronics MC7824ACTG 48 1
    • 1 -
    • 10 -
    • 100 $0.33
    • 1000 $0.27
    • 10000 $0.24
    Buy Now
    TME MC7824ACTG 1
    • 1 $0.61
    • 10 $0.55
    • 100 $0.48
    • 1000 $0.38
    • 10000 $0.38
    Get Quote
    Avnet Silica MC7824ACTG 2,250 10 Weeks 50
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Chip Stock MC7824ACTG 407
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Chip-Germany GmbH MC7824ACTG 3
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    EBV Elektronik MC7824ACTG 11 Weeks 50
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    IBS Electronics MC7824ACTG 5,800 100
    • 1 -
    • 10 -
    • 100 $0.48
    • 1000 $0.41
    • 10000 $0.37
    Buy Now
    Master Electronics MC7824ACTG 2,900
    • 1 -
    • 10 -
    • 100 $0.34
    • 1000 $0.29
    • 10000 $0.26
    Buy Now
    New Advantage Corporation MC7824ACTG 12,600 1
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.35
    • 10000 $0.35
    Buy Now
    Vyrian MC7824ACTG 371
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote

    STMicroelectronics L7824ACV

    IC REG LINEAR 24V 1.5A TO220
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey L7824ACV Tube 1,253 1
    • 1 $0.58
    • 10 $0.41
    • 100 $0.32
    • 1000 $0.28
    • 10000 $0.28
    Buy Now
    STMicroelectronics L7824ACV 1,444 1
    • 1 $0.57
    • 10 $0.40
    • 100 $0.32
    • 1000 $0.28
    • 10000 $0.28
    Buy Now
    Bristol Electronics L7824ACV 50 7
    • 1 -
    • 10 $0.83
    • 100 $0.54
    • 1000 $0.54
    • 10000 $0.54
    Buy Now
    ComSIT USA L7824ACV 12,975
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Chip-Germany GmbH L7824ACV 95
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Vyrian L7824ACV 1,024
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote

    STMicroelectronics L7824ABV-DG

    IC REG LINEAR 24V 1.5A TO220
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey L7824ABV-DG Tube 428 1
    • 1 $1.89
    • 10 $1.39
    • 100 $1.13
    • 1000 $0.99
    • 10000 $0.94
    Buy Now
    Avnet Americas L7824ABV-DG Tube 8 Weeks 2,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.35
    Buy Now
    Mouser Electronics L7824ABV-DG 1,158
    • 1 $1.58
    • 10 $0.99
    • 100 $0.67
    • 1000 $0.47
    • 10000 $0.39
    Buy Now
    STMicroelectronics L7824ABV-DG 1,158 1
    • 1 $1.55
    • 10 $0.97
    • 100 $0.66
    • 1000 $0.54
    • 10000 $0.54
    Buy Now
    TME L7824ABV-DG 266 1
    • 1 $1.57
    • 10 $1.01
    • 100 $0.70
    • 1000 $0.52
    • 10000 $0.41
    Buy Now
    Avnet Silica L7824ABV-DG 9 Weeks 50
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    EBV Elektronik L7824ABV-DG 9 Weeks 50
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now

    Microchip Technology Inc SG7824AK

    IC REG LINEAR TO204AA
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SG7824AK Tray
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Microchip Technology Inc SG7824AK 15 Weeks
    • 1 $236.62
    • 10 $236.62
    • 100 $236.62
    • 1000 $236.62
    • 10000 $236.62
    Buy Now
    Master Electronics SG7824AK
    • 1 -
    • 10 $189.30
    • 100 $146.86
    • 1000 $146.86
    • 10000 $146.86
    Buy Now

    7824 A Datasheets Context Search

    Catalog Datasheet Type Document Tags PDF

    7805CD2T

    Abstract: 7809ct 7812CT 7815CT 7818ct 7812CD2T 7805CT voltage regulator 7806CT transistor 7805ct 7812CT 12V voltage regulator
    Contextual Info: MIK78XX series DATA SHEET • 1A POSITIVE-VOLTAGE REGULATORS 16 JUNE 2003 NO. 00011 REV 1-03 MIK78xx series Page CONTENTS Page GENERAL DESCRIPTION 1 MIK 7818 7 FEATURES 1 MIK 7824 7 INTERNAL BLOCK DIAGRAM 2 PIN DESCRIPTION 2 ABSOLUTE MAXIMUM RATINGS 2 FREE-AIR TEMPERATURE DISSIPATION


    Original
    MIK78XX 7805CD2T 7809ct 7812CT 7815CT 7818ct 7812CD2T 7805CT voltage regulator 7806CT transistor 7805ct 7812CT 12V voltage regulator PDF

    oq 0051

    Abstract: t7824
    Contextual Info: @ SPT S/GNAL PROCESSING TECHNOLOGIES SP T 7824 10-BIT, 40 MSPS, TTL OUTPUT A/D CONVERTER FEATURES • • • • • • • APPLICATIONS Monolithic 40 MSPS Converter On-Chip Track/Hold Bipolar ±2.0 V Analog Input 57 dB SNR @ 3.58 MHz Input Low Power 1.0 W Typical


    OCR Scan
    10-BIT, SPT7824 10-bit SPT7824 000343b oq 0051 t7824 PDF

    IC 7824

    Abstract: ci 7824
    Contextual Info: DATA CONTAINED IN THIS DOCUMENT IS PROPRIETARY TO TROMPETER ELECTRONICS INC. AND SHALL NOT BE DISCLOSED, COPIED OR USED FOR PROCUREMENT OR MANUFACTURE WITHOUT EXPRESS WRITTEN PERMISSION. REV EO LTR NO A 7824 SH I O F Ò 2 o O b - 0 0 5 3 FZ DATE APPROVED DWN


    OCR Scan
    14S49 IC 7824 ci 7824 PDF

    Contextual Info: Motor Control Board Name Products Description Order No. For Microcontroller, RF & Protection Devices and Wireless Control boards please see the appropriate chapter. TLE 7810 TLE 7824 TLE 7826 Embedded power/ smart relay driver IC Demoboard TLE7826 For quick-starting into lab evaluation of Speed PROFET


    Original
    TLE7826 50060-1TEA. 25kHz 2ED020I12-FI 7ED020E12 2ED250E12-F SP000614428 1ED020I12-F. PDF

    7824 voltage regulator

    Abstract: 7824 7824 24V positive voltage regulator for MA 7824 regulator 7824 7824 24V positive voltage regulator 7824 regulator 7824 5A h7824 7824 A
    Contextual Info: 3-TERMINAL FIXED VOLTAGE REGULATOR Shantou Huashan Electronic Devices Co.,Ltd. H 7824 █ Description The H7824 series of three terminal positive Regulators are available in the TO-220 package and with several fixed output voltages, making them useful in a wide range of applications. Each type employs


    Original
    H7824 O-220 O-220 27VVI38V 10Hzf100kHz 120Hz, 28VVI38V 7824 voltage regulator 7824 7824 24V positive voltage regulator for MA 7824 regulator 7824 7824 24V positive voltage regulator 7824 regulator 7824 5A 7824 A PDF

    7828m

    Abstract: 7824 78Z4 AD7824 sm6105
    Contextual Info: 80 - AD 7824/ 828 •1: VS=VREFH=+5V V HEFL=0 TA =TA m in— TAmax •aa£? • 4 f - + * . 'l 'A 2 j 7 8 2 4 •® A 5 E t§ n‘ ( / z P : W f7 " iu) • S i p ^ E • S l i ' D W v m t t t i T ' g • A *T & H f*J® & itg n m . ftW E flU M • CMO S


    OCR Scan
    AD7824/ 450mW AD7824/28K AD7824/28L AD7824/28B AD7824/28C KAD7828) AD7828 AD7824/AD782fl AD7824 7828m 7824 78Z4 sm6105 PDF

    7824

    Abstract: 09 03 264 6823 09 03 296 6825 09 03 296 2824 09 03 232 2845 09 03 296 32 pins connector 7845 09 03 296 7825 7834
    Contextual Info: Data downloaded from http://www.angliac.com - the website of Anglia - tel: 01945 474747 DIN 41 612 • Type C Number of contacts Types signal to 2 A 96, 64, 32 Female connectors Identification Female connector with solder pins 2.9 mm Female connector with kinked


    Original
    PDF

    2825b

    Abstract: 09 03 264
    Contextual Info: DIN 41 612 • Type C Number of contacts 96, 64, 32 DIN Signal up to 2 A Female connectors Identification Part No. Performance levels according to IEC 60603-2. Explanation chapter 00 Number Contact of contacts arrangement 3 2 1 Female connector with solder pins


    Original
    6824b) 6824c) 6841d) 7824b) 2824b) 6825b) 6421c) 2825b 09 03 264 PDF

    7824A

    Contextual Info: ANALOG DEVICES □ FEATURES 4- or 8-Analog Input Channels Built-In Track/Hold Function 10kHz Signal Handling on Each Channel Fast Microprocessor Interface Single +5V Supply Low Power: 50mW Fast Conversion Rate, 2.5|is/Channel Tight Error Specification: 1/2LSB


    OCR Scan
    10kHz AD7824/AD7828 AD7B24 AD7828 AO7829 AD7824 AD7824) AD7828) AD7824 7824A PDF

    MX7824LN

    Contextual Info: CMOS High Speed 8 -B it A /D C onverter w ith M u ltip le x e r an d R eference .Features .General Description Microprocessor interface’s are simplified by the A D C ’s ability to appear as a memory location or I/O port without the need for external logic. The data outputs


    OCR Scan
    X7824 AD7824 AD7828. MAX154 MAX158, MX7828KP MX7828BQ MX7828UQ MX7828TQ MX7828CQ MX7824LN PDF

    LD 7575 PS

    Abstract: LD 7576 PS L7106 D674A l7135 TA 7136 p MX7582
    Contextual Info: ULTRA-HIGH-SPEED CONVERSION <ljj-s 8 BITS _ SINGLE CHANNEL INTERNAL T/H INTERNAL T/H ★ ir M A X 101 (500M sps) MAX 150 ( 1.34ps/ref) WMAX152 (3V) t o M A X 104 (lG sps) tr MAX153 (0.66^5) * t*M AX100<250Msps) MAX165 (5ns/ref) MAX166 (5(js/ref/diff in)


    OCR Scan
    100ns) MAX151 MAXI77 33ns/reO MAX122 MAX163 MAX164 MAX121 MAX194 10ys/serial) LD 7575 PS LD 7576 PS L7106 D674A l7135 TA 7136 p MX7582 PDF

    Contextual Info: 2 3 5 4 6 7 X Kontaktanordnung A 64 E i n l b t - K o n t a k t e contact arrangement Z 2:1 64- solder-contacts 31 27 29 23 25 19 21 15 17 11 13 7 9 El = E in l b t - K o n t a k t solder-contact _a — c 10,5 ±0.1 kinked Einlbt-Kontakt 8 • 5 - 0,1 k in ke d s o l d e r - c o n t a c t


    OCR Scan
    D-32339 PDF

    Contextual Info: Ko nt ak t ano r d nu ng Con t ac t arrangement 15 11 7 32 E i n l o t - K o n t a k t e 32 s o l d e r - c o n t a c t s 3 13 9 5 1 I I I I Z 2: 1 la = E i n l o t - K o n t a k t = solder-contact _a □ = Kontaktpositon nic ht belegt = p o s i t i o n without contact


    OCR Scan
    76jum 27jttm 50jiiin) PDF

    Contextual Info: X Ko nt ak t ano r d nu ng Con t ac t ar rangement 31 27 29 23 25 19 21 15 17 11 13 64 E i n l o t - K o n t a k t e 64 s o l d e r - c o n t a c t s Z 2: 1 7 la = E i n l o t - K o n t a k t = solder-contact 9 _a □ = Kontaktpositon nicht belegt = p o s i t i o n without contact


    OCR Scan
    76jum 27jttm 50jiiin) PDF

    Contextual Info: 2 3 5 4 6 7 X Kontaktanordnung c o n ta c t arrangement A 31 27 29 23 19 21 25 15 17 11 13 64 E i n l b t - K o n t a k t e 64 s o l d e r - c o n t a c t s l 2:1 7 9 h _a = Ei n lo t- K o n ta k t so ld e r-c o n ta c t 10,5 ± 0.1 □ = K ontak tpos ition nicht belegt


    OCR Scan
    D-32339 PDF

    Contextual Info: X 32 E i n l o t - Ko n t a k t e 32 s o l d e r - c o n t a c t s Kontaktanordnung contact arrangement 31 27 29 25 I 19 21 I 15 17 11 13 I I 9 I 5 I 1 I h _a o □ □ □□ o l 7 IWnia □□□ EIIZIIHI □□□ EHZIIHI □□□ EHZIIHI □□□ EHZIIHI


    OCR Scan
    PDF

    Contextual Info: 2 3 4 5 6 7 X Kont ak t ano r d nu ng c o n t a c t ar r angement A 31 27 29 23 19 21 25 15 17 11 13 64 E i n l o t - K o n t a k t e 64 s o l d e r - c o n t a c t s 2:1 7 9 h _a { LochbiId board d r i l l i n g s ) 10,5 ±0,1 8,5 z - D CVI 1 — Pos i t i on


    OCR Scan
    D-32339 PDF

    7805

    Abstract: 7812 7812 circuit design 7815 7824
    Contextual Info: QUICK-FIT TERMINALS k ey elc o.co m .250 “STURDI-MOUNT” PC QUICK-FIT HEADERS • Ideal for rugged multi-insertion applications • Pre-assembled header reduces PC assembly costs • Increases PC board retention strength • Keeps terminals perpendicular


    Original
    500VAC 7805 7812 7812 circuit design 7815 7824 PDF

    Contextual Info: 2 3 4 5 6 7 X Kont ak t ano r d nu ng c o n t a c t ar r angement A 31 27 29 23 19 21 25 15 17 11 13 96 E i n l o t - K o n t a k t e solder-contacts 9 h _a { LochbiId board d r i l l i n g s ) 32 i_ n cvi al l e Locher a l l holes 10,5 ± 0,1 8,5 0,1


    OCR Scan
    D-32339 PDF

    nas 1669

    Abstract: ms21340-05 ASN-E0052 MS21340 MS25081C6 MS-21340-05 MS21340 NUT nas 1599 V6355 MS25081-c6
    Contextual Info: 340FW03-R1 NOTES 1 - HOUSING MATERIAL: AT P/N 4087269-901 300 SERIES STAINLESS STEEL 125 MAX SURFACE FINISH TARGET MATERIAL: 17-4 STAINLESS STEEL, CONDITION A 125 MAX SURFACE FINISH 2 - TEMPERATURE RANGE: -55 TO +85C /3\ MAIN KEYWAY OF CONNECTOR IS ALIGNED TO SENSOR


    OCR Scan
    C095538 PR-24278 FW-11000) 340FW03-R1 nas 1669 ms21340-05 ASN-E0052 MS21340 MS25081C6 MS-21340-05 MS21340 NUT nas 1599 V6355 MS25081-c6 PDF

    7824 voltage regulator circuit diagram

    Abstract: MA 7824 regulator 7824 7824 regulator 7824 voltage regulator 7824 l7824 7824 adjustable voltage regulator circuit diagram 7824 5A PL7824XJ3
    Contextual Info: CYStech Electronics Corp. Spec. No. : C528J3 Issued Date : 2003.04.02 Revised Date : Page No. : 1/3 3-TERMINAL POSITIVE VOLTAGE REGULATOR PL7824XJ3 Description The PL7824XJ3 series of three-terminal positive regulators are TO-252 available in the TO-252 package. These regulators can provide local


    Original
    C528J3 PL7824XJ3 PL7824XJ3 O-252 O-252 UL94V-0 PL7824J3 7824 voltage regulator circuit diagram MA 7824 regulator 7824 7824 regulator 7824 voltage regulator 7824 l7824 7824 adjustable voltage regulator circuit diagram 7824 5A PDF

    7812 TO3 PACKAGE PIN DIAGRAM

    Abstract: 7808 to3 12V Fixed-Voltage Regulator 7812 7805 TO-3 7824 TO-3 package 7812 TO-3 7824 To-3 7806 regulator PIN DIAGRAM 7815 TO3 pin diagram of 7805 voltage regulator TO-3
    Contextual Info: S ig n e tic s Integrated Circuits - V oltage Regulators C O N N E C T IO N D IA G R A M juA78 Series Three-Terminal Positive Voltage |Regulator G E N E R A L D E SC R IPTIO N The 780 0 series o f m o n o lith ic Three-Term inal Positive V o lt­ age Regulators em p lo y internal, cu rre n t lim itin g , therm al


    OCR Scan
    juA78 7812 TO3 PACKAGE PIN DIAGRAM 7808 to3 12V Fixed-Voltage Regulator 7812 7805 TO-3 7824 TO-3 package 7812 TO-3 7824 To-3 7806 regulator PIN DIAGRAM 7815 TO3 pin diagram of 7805 voltage regulator TO-3 PDF

    7824 voltage regulator circuit diagram

    Abstract: MA 7824 7824 REGULATOR 7824 7824 5A 7824 voltage regulator 7824, 2 pin regulator pin diagram of 7824 7824 k 7824 adjustable voltage regulator circuit diagram
    Contextual Info: CYStech Electronics Corp. Spec. No. : C528E3 Issued Date : 2003.04.02 Revised Date : Page No. : 1/3 3-TERMINAL POSITIVE VOLTAGE REGULATOR PL7824XE3 Description The PL7824XE3 series of three-terminal positive regulators are available in the TO-220AB package. These regulators can provide


    Original
    C528E3 PL7824XE3 PL7824XE3 O-220AB O-220AB UL94V-0 PL7824E3 7824 voltage regulator circuit diagram MA 7824 7824 REGULATOR 7824 7824 5A 7824 voltage regulator 7824, 2 pin regulator pin diagram of 7824 7824 k 7824 adjustable voltage regulator circuit diagram PDF

    LM78A

    Abstract: 7812 voltage regulator 5A Transistor LM 7812 lm 7812 voltage regulator 7812 5A 7824 5A 7818 5A LM7812 3 ampere LM 7824 voltage regulator circuit diagram 7815 5A
    Contextual Info: LM7800 Series 3-Terminal Fixed Voltage Regulators ISemiconductor [t h r e e -t e r m i n a l These voltage p o s it iv e v o l t a g e r e g u l a t o r s regulators are compensation. With adequate heatsinking they can monolithic deliver output currents in excess of 1.5 ampere.


    OCR Scan
    LM7800 Io-20mA- LM78XX Io-10mA^ LM78A 7812 voltage regulator 5A Transistor LM 7812 lm 7812 voltage regulator 7812 5A 7824 5A 7818 5A LM7812 3 ampere LM 7824 voltage regulator circuit diagram 7815 5A PDF