Voltage Regulator

What is the internal resistance of AN7812 voltage regulator?

i am making a 12V DC power supply and the voltage regulator that i am using is always heating up after about 5 minutes of operation. my problem is that i can't calculate the DC voltage input to the regulator since i don't know the reistance of my voltage regulator. we are required to use calculations to determine the input voltage to the voltage regulator.

Have you rectified and filtered effectively before the regulator?

Un-regulated and filter supply can cause the regulator to work harder than it should.

G

VOLTAGE REGULATOR FOR KOHLER 25 755 03 S 41 403 05 S AHAKH6005 made by AEP
VOLTAGE REGULATOR FOR KOHLER 25 755 03 S 41 403 05 S AHAKH6005 made by AEP
$21.99
Time Remaining: 5h 20m
Buy It Now for only: $21.99

honda g400 10hp engine voltage regulator
honda g400 10hp engine voltage regulator
$12.00
Time Remaining: 6h 53m
Buy It Now for only: $12.00

John Deere Voltage Regulator MIA11665 Lt150 LT155 Lt133 And More
John Deere Voltage Regulator MIA11665 Lt150 LT155 Lt133 And More
$23.57
Time Remaining: 7h 52m
Buy It Now for only: $23.57

WHEEL HORSE ONAN P216G P218G P220G VOLTAGE REGULATOR
WHEEL HORSE ONAN P216G P218G P220G VOLTAGE REGULATOR
$59.99
Time Remaining: 8h 4m
Buy It Now for only: $59.99

Sears Tecumseh Tractor Voltage Regulator GT Custom 8 10 12 15 295924 435 014
Sears Tecumseh Tractor Voltage Regulator GT Custom 8 10 12 15 295924 435 014
$44.99
Time Remaining: 8h 34m
Buy It Now for only: $58.99

Briggs and Stratton voltage regulator 394890 691185 393374 797182
Briggs and Stratton voltage regulator 394890 691185 393374 797182
$17.50
Time Remaining: 8h 42m
Buy It Now for only: $17.50

NEW 65kw 4kw GENERATOR AVR VOLTAGE REGULATOR RECTIFIER AUTOMATIC
NEW 65kw 4kw GENERATOR AVR VOLTAGE REGULATOR RECTIFIER AUTOMATIC
$34.95
Time Remaining: 8h 44m
Buy It Now for only: $34.95

Kohler 8HP Jacobsen K181 K181S Voltage regulator rectifier GOOD SHAPE 237335
Kohler 8HP Jacobsen K181 K181S Voltage regulator rectifier GOOD SHAPE 237335
$34.99
Time Remaining: 9h 33m
Buy It Now for only: $34.99

JOHN DEERE LA125 VOLTAGE REGULATOR PART NUMBER MIU11504
JOHN DEERE LA125 VOLTAGE REGULATOR PART NUMBER MIU11504
$24.42
Time Remaining: 9h 33m
Buy It Now for only: $24.42

Voltage Regulator Rectifier Briggs  Stratton 351400 351770 42A700 Series NEW
Voltage Regulator Rectifier Briggs Stratton 351400 351770 42A700 Series NEW
$22.00
Time Remaining: 9h 48m
Buy It Now for only: $22.00

NEW OEM KAWASAKI VOLTAGE REGULATOR PART 210667012
NEW OEM KAWASAKI VOLTAGE REGULATOR PART 210667012
$41.44
Time Remaining: 9h 54m
Buy It Now for only: $41.44

Voltage regulator for Kohler 25 403 0325 755 03
Voltage regulator for Kohler 25 403 0325 755 03
$28.00
Time Remaining: 10h 13m
Buy It Now for only: $28.00

BRIGGS  STRATTON Voltage Rectifier Regulator 28M700 28Q700 Series Engines
BRIGGS STRATTON Voltage Rectifier Regulator 28M700 28Q700 Series Engines
$22.00
Time Remaining: 12h 37m
Buy It Now for only: $22.00

CUB CADET 128 GENERATOR VOLTAGE REGULATOR NEW
CUB CADET 128 GENERATOR VOLTAGE REGULATOR NEW
$39.95
Time Remaining: 12h 42m
Buy It Now for only: $39.95

Cub Cadet 1863 1864 Kohler CH18 voltage regulator
Cub Cadet 1863 1864 Kohler CH18 voltage regulator
$14.00
Time Remaining: 13h 48m

Prestolite P9 62 Voltage Regulator 12 volts for Kohler
Prestolite P9 62 Voltage Regulator 12 volts for Kohler
$15.00
Time Remaining: 14h 28m
Buy It Now for only: $15.00

John Deere L120 125 starter solenoid and cables and voltage regulator Briggs
John Deere L120 125 starter solenoid and cables and voltage regulator Briggs
$19.99
Time Remaining: 16h 58m
Buy It Now for only: $19.99

2pcs New Type Stamford AVR SX460 Automatic Voltage Regulator
2pcs New Type Stamford AVR SX460 Automatic Voltage Regulator
$108.00
Time Remaining: 17h 29m
Buy It Now for only: $108.00

OEM Briggs  Stratton Voltage Regulator 691185 394890
OEM Briggs Stratton Voltage Regulator 691185 394890
$79.99
Time Remaining: 17h 33m
Buy It Now for only: $79.99

John Deere Used Voltage Regulator 325 345 F525 425 445 455 AM126304
John Deere Used Voltage Regulator 325 345 F525 425 445 455 AM126304
$25.00
Time Remaining: 18h 56m
Buy It Now for only: $35.00

Cub Cadet 127 Tractor Voltage Regulator Mount
Cub Cadet 127 Tractor Voltage Regulator Mount
$9.99
Time Remaining: 19h 5m
Buy It Now for only: $9.99

Voltage Regulator replaces Briggs  Stratton  493219 Stens 435 227 New
Voltage Regulator replaces Briggs Stratton 493219 Stens 435 227 New
$39.95
Time Remaining: 19h 16m
Buy It Now for only: $39.95

Ariens GT18 Kohler Magnum 18HP Voltage Regulator
Ariens GT18 Kohler Magnum 18HP Voltage Regulator
$19.99
Time Remaining: 20h 5m

John Deere 425 445 Voltage Regulator
John Deere 425 445 Voltage Regulator
$34.99
Time Remaining: 20h 5m

FORD 120 Tractor Voltage Regulator
FORD 120 Tractor Voltage Regulator
$18.74
Time Remaining: 20h 32m
Buy It Now for only: $18.74

John Deere 17HP Briggs Voltage regulator
John Deere 17HP Briggs Voltage regulator
$14.99
Time Remaining: 1d 6h 4m

Voltage Regulator For John Deere Gator  Tractor  Mower with Kawasaki Engine
Voltage Regulator For John Deere Gator Tractor Mower with Kawasaki Engine
$30.00
Time Remaining: 1d 6h 6m
Buy It Now for only: $30.00

Voltage Regulator for Briggs  Stratton Rep 794360 691188 491546
Voltage Regulator for Briggs Stratton Rep 794360 691188 491546
$22.49
Time Remaining: 1d 6h 50m
Buy It Now for only: $22.49

Stens Voltage Regulator NEW IN PKG 435 155
Stens Voltage Regulator NEW IN PKG 435 155
$49.99
Time Remaining: 1d 8h 27m
Buy It Now for only: $49.99

Honda Tractor Voltage Regulator
Honda Tractor Voltage Regulator
$25.00
Time Remaining: 1d 8h 29m
Buy It Now for only: $40.00

797375 Voltage Regulator for Briggs and Stratton
797375 Voltage Regulator for Briggs and Stratton
$77.15
Time Remaining: 1d 8h 33m

New John Deere MIU10886 Voltage Regulator X520 X540 Garden Tractors
New John Deere MIU10886 Voltage Regulator X520 X540 Garden Tractors
$125.00
Time Remaining: 1d 8h 34m
Buy It Now for only: $125.00

Voltage Regulator Club Car 102711201 1015777 DS Carryall Precedent golf cart
Voltage Regulator Club Car 102711201 1015777 DS Carryall Precedent golf cart
$42.99
Time Remaining: 1d 8h 43m
Buy It Now for only: $42.99

Voltage regulator for Briggs  Stratton 797375 691185
Voltage regulator for Briggs Stratton 797375 691185
$18.99
Time Remaining: 1d 9h 34m
Buy It Now for only: $18.99

KAWASAKI VOLTAGE REGULATOR 21066 2071 6 WIRE LEADS 1 2 PIN CONNECTORAND 1 4 PIN
KAWASAKI VOLTAGE REGULATOR 21066 2071 6 WIRE LEADS 1 2 PIN CONNECTORAND 1 4 PIN
$68.00
Time Remaining: 1d 10h 17m
Buy It Now for only: $68.00

KAWASAKI VOLTAGE REGULATOR 21066 2056 21066 2070 FOR 20 22 HP WATER COOLED
KAWASAKI VOLTAGE REGULATOR 21066 2056 21066 2070 FOR 20 22 HP WATER COOLED
$63.00
Time Remaining: 1d 10h 18m
Buy It Now for only: $63.00

Voltage Regulator
Voltage Regulator
$75.00
Time Remaining: 1d 12h 3m
Buy It Now for only: $75.00

Kohler Engine Voltage Regulator Stens 435 024 Kohler 41 403 06 S  KB67
Kohler Engine Voltage Regulator Stens 435 024 Kohler 41 403 06 S KB67
$113.76
Time Remaining: 1d 12h 15m
Buy It Now for only: $113.76

Voltage Regulator Grasshopper 185530 Kubota15531 64603 Lawnmower Parts
Voltage Regulator Grasshopper 185530 Kubota15531 64603 Lawnmower Parts
$59.99
Time Remaining: 1d 12h 43m
Buy It Now for only: $59.99

10296 Briggs  Stratton 493219 VOLTAGE REGULATOR
10296 Briggs Stratton 493219 VOLTAGE REGULATOR
$42.15
Time Remaining: 1d 13h 46m
Buy It Now for only: $42.15

Voltage Regulator Replaces KOHLER 2575503
Voltage Regulator Replaces KOHLER 2575503
$35.09
Time Remaining: 1d 14h 15m
Buy It Now for only: $35.09

VOLTAGE REGULATOR BRIGGS  STRATTON 390240
VOLTAGE REGULATOR BRIGGS STRATTON 390240
$95.00
Time Remaining: 1d 14h 52m
Buy It Now for only: $95.00

VOLTAGE REGULATOR KOHLER 41 403 08 S
VOLTAGE REGULATOR KOHLER 41 403 08 S
$74.95
Time Remaining: 1d 14h 52m
Buy It Now for only: $74.95

BRIGGS VOLTAGE REGULATOR 390545 OEM
BRIGGS VOLTAGE REGULATOR 390545 OEM
$22.00
Time Remaining: 1d 18h 26m
Buy It Now for only: $22.00

JOHN DEERE VOLTAGE REGULATOR AM126304 LX172 LX176 LX178 LX186 LX188 LX279
JOHN DEERE VOLTAGE REGULATOR AM126304 LX172 LX176 LX178 LX186 LX188 LX279
$39.00
Time Remaining: 1d 18h 32m
Buy It Now for only: $39.00

KOHLER GENUINE OEM Voltage Regulator Rectifier REPCO FG 4720 B HARD TO FIND
KOHLER GENUINE OEM Voltage Regulator Rectifier REPCO FG 4720 B HARD TO FIND
$39.95
Time Remaining: 1d 18h 43m
Buy It Now for only: $54.90

SEARS SUBURBAN 18 6 VOLTAGE REGULATOR
SEARS SUBURBAN 18 6 VOLTAGE REGULATOR
$21.99
Time Remaining: 1d 20h 16m

John Deere Voltage Regulator AM126304 from 445 fits 425 455 345 320 325 245 265
John Deere Voltage Regulator AM126304 from 445 fits 425 455 345 320 325 245 265
$30.00
Time Remaining: 1d 22h 4m
Buy It Now for only: $30.00

KAWASAKI FD750D VOLTAGE REGULATOR
KAWASAKI FD750D VOLTAGE REGULATOR
$149.99
Time Remaining: 1d 22h 11m
Buy It Now for only: $149.99

BUSHHOG D4 10 VOLTAGE REGULATOR
BUSHHOG D4 10 VOLTAGE REGULATOR
$24.99
Time Remaining: 2d 3h 51m
Buy It Now for only: $24.99

NEW VOLTAGE REGULATOR FITS KOHLER JOHN DEERE ARIENS KT17 KT19 234279 16323 LK
NEW VOLTAGE REGULATOR FITS KOHLER JOHN DEERE ARIENS KT17 KT19 234279 16323 LK
$37.89
Time Remaining: 2d 6h 35m
Buy It Now for only: $37.89

Honda AVR EX3300S EX4500S Replacement Automatic Voltage Regulator Assembly
Honda AVR EX3300S EX4500S Replacement Automatic Voltage Regulator Assembly
$85.99
Time Remaining: 2d 7h 56m
Buy It Now for only: $85.99

John Deere LX178LX188 Voltage regulator
John Deere LX178LX188 Voltage regulator
$39.99
Time Remaining: 2d 8h 19m
Buy It Now for only: $39.99

John Deere Voltage Regulator M97348 AM126304 M70121 AM108848 14029
John Deere Voltage Regulator M97348 AM126304 M70121 AM108848 14029
$40.95
Time Remaining: 2d 9h 16m
Buy It Now for only: $40.95

John Deere 212 K301A LAWN GARDEN MOWER TRACTOR ENGINE VOLTAGE REGULATOR
John Deere 212 K301A LAWN GARDEN MOWER TRACTOR ENGINE VOLTAGE REGULATOR
$14.99
Time Remaining: 2d 10h 41m
Buy It Now for only: $14.99

VOLTAGE REGULATOR FD620D KAWASAKI P N 21066 2070 NEW
VOLTAGE REGULATOR FD620D KAWASAKI P N 21066 2070 NEW
$105.00
Time Remaining: 2d 11h 47m
Buy It Now for only: $105.00

New VOLTAGE REGULATOR for Gravely Ariens Tractor Mower w K Series Engines
New VOLTAGE REGULATOR for Gravely Ariens Tractor Mower w K Series Engines
$35.99
Time Remaining: 2d 11h 49m
Buy It Now for only: $35.99

NEW OEM KAWASAKI VOLTAGE REGULATOR 21066 2071 JOHN DEERE
NEW OEM KAWASAKI VOLTAGE REGULATOR 21066 2071 JOHN DEERE
$79.99
Time Remaining: 2d 12h 35m
Buy It Now for only: $79.99

VOLTAGE REGULATOR FD620D KAWASAKI p n 21066 2070
VOLTAGE REGULATOR FD620D KAWASAKI p n 21066 2070
$105.00
Time Remaining: 2d 13h 28m
Buy It Now for only: $105.00

Gilson Garden Mark Squire 8 Tractor Voltage Regulator
Gilson Garden Mark Squire 8 Tractor Voltage Regulator
$24.99
Time Remaining: 2d 14h 59m
Buy It Now for only: $24.99

CUB CADET 129 GENERATOR VOLTAGE REGULATOR NEW
CUB CADET 129 GENERATOR VOLTAGE REGULATOR NEW
$44.95
Time Remaining: 2d 15h 35m
Buy It Now for only: $44.95

VOLTAGE REGULATOR JOHN DEERE 160 165 170 172 175 176
VOLTAGE REGULATOR JOHN DEERE 160 165 170 172 175 176
$105.99
Time Remaining: 2d 15h 48m
Buy It Now for only: $105.99

VOLTAGE REGULATOR JOHN DEERE 180 185 186 240 242 245
VOLTAGE REGULATOR JOHN DEERE 180 185 186 240 242 245
$106.99
Time Remaining: 2d 15h 49m
Buy It Now for only: $106.99

Voltage Regulator for ONAN for 16 thru 24 hp
Voltage Regulator for ONAN for 16 thru 24 hp
$39.00
Time Remaining: 2d 15h 52m
Buy It Now for only: $69.95

JOHN DEERE 115 19HP BRIGGS AND STRATTON INTEK VOLTAGE REGULATOR
JOHN DEERE 115 19HP BRIGGS AND STRATTON INTEK VOLTAGE REGULATOR
$32.99
Time Remaining: 2d 16h 10m
Buy It Now for only: $32.99

16HP MTD FARM KING WIRING HARNESS VOLTAGE REGULATOR
16HP MTD FARM KING WIRING HARNESS VOLTAGE REGULATOR
$49.99
Time Remaining: 2d 16h 10m
Buy It Now for only: $49.99

John Deere 210 212 214 216 300 312 314 317 voltage regulator
John Deere 210 212 214 216 300 312 314 317 voltage regulator
$10.99
Time Remaining: 2d 16h 54m
Buy It Now for only: $15.00

John Deere Tractor Lawn Mower 140 H3 Kohler K301 12HP Engine Voltage Regulator
John Deere Tractor Lawn Mower 140 H3 Kohler K301 12HP Engine Voltage Regulator
$14.99 (1 Bid)
Time Remaining: 2d 17h 40m

Briggs and Stratton 17 Intek 31f707 voltage regulator john deere 102
Briggs and Stratton 17 Intek 31f707 voltage regulator john deere 102
$15.00
Time Remaining: 2d 21h 49m
Buy It Now for only: $15.00

Cub Cadet 106 Tractor Voltage Regulator Mount
Cub Cadet 106 Tractor Voltage Regulator Mount
$9.99
Time Remaining: 2d 22h 16m
Buy It Now for only: $9.99

FORD 80 Tractor Voltage Regulator
FORD 80 Tractor Voltage Regulator
$18.74
Time Remaining: 3d 4h 35m
Buy It Now for only: $18.74

Kawasaki Voltage Regulator  Plug John Deere AM126304
Kawasaki Voltage Regulator Plug John Deere AM126304
$75.00
Time Remaining: 3d 6h 21m
Buy It Now for only: $75.00