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1 D12K10R Wirewound Resistors Chassis Mount 12watt 10ohm 10 Tubular Ceramic $7.00 |
5 PCs Ohmite 10J50R Metal Film Resistor 150K OHM 2W $3.99 |
Ohmite PFE5K1R00 Power Rib Resistor New Surplus $65.00 |

ONE OHMITE AZ331K 330 OHM 55W 5W 5 WATT 10 RADIAL CERAMIC RESISTOR BOX59 $3.50 |
100 PCs RESISTOR METAL GLAZE THICK FILM 01W 1 25ppm 536 ohm THROUGH HOLE $3.99 |
Ohmite Little Devil 2 Watt 12K Ohm 10 Carbon Composition Resistors NOS 10x $4.95 |

10 Ohmite Resistors 56 Ohm 1 Watt 10 RC32GF560K Carbon Comp $7.62 |
Ohmite Little Devil 2 Watt 47 Ohm 10 Molded Composition Resistors NOS 10x $6.95 |
Ohmite 2 Watt 6800 Ohm 10 Molded Composition Resistors NOS 50pcs $19.95 |

64K4149 Ohmite C300K2R0E Resistor Power 2 Ohm 300W 10 $40.37 |
OHMITE 1362 Resistor 225 Watts 1000 Ohms D225K1KO New Old Stock Made in USA $16.90 |
Ohmite Resistor LN100J5R0 Wirewound 5 ohm 5 100 Watt Vit Enamel Bolt On NIB $8.00 |

OHMITE RESISTOR RW47V200 NSN 5905 00 951 3772 20 OHMS $68.00 |
Lot of Ohmite wire wound power resistors 22K 200 130 120 47 Ohm 3 10W $8.00 |
2 Ohmite Power Resistors 16 Ohm 10 Watt RW31G160 Wire wound Vitreous $9.07 |

Ohmite RJS800 Resistor 800 Ohms 0250A with Claro VC 10 F Ceramic Resistor $19.95 |
New L225J150 0905 Type 270 250w watt 150 ohm Vitreous Wire Wound Resistor Ohmite $13.99 |
New L175J100 0905 Type 270 175w watt 100 ohm Vitreous Wire Wound Resistor Ohmite $13.99 |

10624 New In Box Ohmite D50K250 Power Resistor 50W 250OH $11.54 |
Lot of 2 Ohmite Varriable Resistor RHL500 Model H Wat 25 Ohms 500 9928 $44.99 |
New OHMITE VARRIABLE RESISTOR PART RHL500 Model H 25 watt 500 ohms 9928 $24.99 |

OHMITE E300K16R WIREWOUND RESISTOR 16 OHM 300 W $20.00 |
Ohmite Wirewound Resistor P N D12K400E $7.65 |
1 PC 55J1R0 OHMITE Wirewound Resistors Chassis Mount 55watt 1ohm 5 $8.00 |

L175J100E Ohmite ResistorWirewound100 OhmsPwr Rtg 175 WTol 5Lug 1 PER $20.00 |
2 Ohmite Power Resistors 250 Ohms 100 Ohms At 225 Watts $11.99 |
OHMITE D100K10RE 10 OHMS 10 Resistor $8.97 |

D50K150E Ohmite RESISTOR POWER ADJ 150 OHM 50W 1 Per $12.00 |
F55J1KOE Ohmite RESISTOR POWER 1KOHM 55W 5 1 PER $10.00 |
NEW LOT OF 2 OHMITE 23J7K5 CERAMIC WIREWOUND RESISTORS $5.00 |

WFH90L2K7J Ohmite RESISTOR CHASIS MOUNT 27K OHM 5 90W 1 PER $20.00 |
WFH90L10KK Ohmite Wirewound Resistors 90watt 100ohm 5 High Power 1 PER $20.00 |
WH90L1K50J Ohmite RESISTOR CHASIS MOUNT 1500 OHM 5 90W 1 PER $38.00 |

OHMITE DIVIDOHM 2500 OHMS 225W ENAMELED RESISTOR D225K2K5 NNB $24.99 |
OHMITE VITREOUS ENAMELED RESISTORS L100J100 100 WATT 100 OHM NEW $14.00 |
Pair of Large Ohmite Adjustable Power Resistors 1 ohm 5 ohms NOS 200 watts $29.25 |

OHMITE 200K OHMS PRECISION WIREWOUND NON INDUCTIVE RESISTOR $5.47 |
Ohmite C300 10RE Lug Resistor 10 10 Ohms New $29.99 |
10 Ohmite Resistor 39K Ohm 1 Watt 10 Carbon Comp RC32GF392K $8.10 |

Ohmite D25K150 Resistor Dividohm 210 Series NOS $5.99 |
10 Ohmite TAH20P33R0JE 33 Ohm 20W Thick Film Resistors $19.99 |
Lot Various Resistors Mallory Ohmite 16HJ 25 L175J10R L100J100 5HJ500 New $49.99 |

AW120K Ohmite 25 Watt 12 Ohm 10 Ceramic Composition Resistor PulsEater $14.50 |
AY390K Ohmite 45 Watt 39 Ohm 10 Ceramic Composition Resistor PulsEater $14.50 |
AW560K Ohmite 25 Watt 56 Ohm 10 Ceramic Composition Resistor PulsEater $14.50 |

AX102K Ohmite 35 Watt 1K Ohm 10 Ceramic Composition Resistor PulsEater $14.50 |
AX220K Ohmite 35 Watt 22 Ohm 10 Ceramic Composition Resistor PulsEater $14.50 |
AX330K Ohmite 35 Watt 33 Ohm 10 Ceramic Composition Resistor PulsEater $14.50 |

AZ221K Ohmite 55 Watt 220 Ohm 10 Ceramic Composition Resistor PulsEater $22.50 |
AZ331K Ohmite 55 Watt 330 Ohm 10 Ceramic Composition Resistor PulsEater $14.50 |
AZ821K Ohmite 55 Watt 820 Ohm 10 Ceramic Composition Resistor PulsEater $22.50 |

5 pcs B12J12K Ohmite 12 Watt 12K Ohm 5 Wirewound Vitreous Enamel Resistor $19.75 |
5 pcs B12J600 Ohmite 12 Watt 600 Ohm 5 Wirewound Vitreous Enamel Resistor $19.75 |
5 pcs B12J900 Ohmite 12 Watt 900 Ohm 5 Wirewound Vitreous Enamel Resistor $19.75 |

5 pcsB20J10K2 Ohmite 20 Watt 102K Ohm 5 WirewoundVitreous EnamelResistor $19.75 |
5 pcs B20J30R Ohmite 20 Watt 30 Ohm 5 Wirewound Vitreous Enamel Resistor $19.75 |
5 pcs B20J650 Ohmite 20 Watt 650 Ohm 5 Wirewound Vitreous Enamel Resistor $19.75 |

5 pcs B5J200 Ohmite 5 Watt 200 Ohm 5 Wirewound Vitreous Enamel Resistor $19.75 |
5 pcs B8J450 Ohmite 8 Watt 450 Ohm 5 Wirewound Vitreous Enamel Resistor $19.75 |
5 pcs B5J3R0 Ohmite 5 Watt 3 Ohm 5 Wirewound Vitreous Enamel Resistor $19.75 |

5 pcs B5J75R Ohmite 5 Watt 75 Ohm 5 Wirewound Vitreous Enamel Resistor $19.75 |
5 pcs B8J1K25 Ohmite 8 Watt 125K Ohm 5 WirewoundVitreous EnamelResistor $19.75 |
5 pcs B8J2K0 Ohmite 8 Watt 2K Ohm 5 Wirewound Vitreous Enamel Resistor $19.75 |

5 pcs B8J600 Ohmite 8 Watt 600 Ohm 5 Wirewound Vitreous Enamel Resistor $19.75 |
5 pcs B8J900 Ohmite 8 Watt 900 Ohm 5 Wirewound Vitreous Enamel Resistor $19.75 |
C1000K10R Ohmite 1000 Watt 10 Ohm 10 Wirewound Vitreous Enamel Resistor $285.00 |

C300K25R Ohmite 300 Watt 25 Ohm 10 Wirewound Vitreous Enamel Resistor $22.50 |
C1000K5R0 Ohmite 1000 Watt 5 Ohm 10 Wirewound Vitreous Enamel Resistor $285.00 |
C1500K23R Ohmite 1500 Watt 23 Ohm 10 Wirewound Vitreous Enamel Resistor $165.00 |

C1500K5R0 Ohmite 1500 Watt 5 Ohm 10 Wirewound Vitreous Enamel Resistor $165.00 |
C35KR04 Ohmite 35 Watt 004 Ohm 10 Wirewound Vitreous Enamel Resistor $14.75 |
C35KR08 Ohmite 35 Watt 008 Ohm 10 Wirewound Vitreous Enamel Resistor $14.75 |

C35KR15 Ohmite 35 Watt 015 Ohm 10 Wirewound Vitreous Enamel Resistor $23.75 |
C375K20R Ohmite 375 Watt 20 Ohm 10 Wirewound Vitreous Enamel Resistor $165.00 |
C400K50R Ohmite 400 Watt 50 Ohm 10 Wirewound Vitreous Enamel Resistor $235.00 |

C500K3R6 Ohmite 500 Watt 36 Ohm 10 Wirewound Vitreous Enamel Resistor $115.00 |
C750K4R1 Ohmite 750 Watt 41 Ohm 10 Wirewound Vitreous Enamel Resistor $115.00 |
NEW IN BOX OHMITE D100K2K5 100 WATTS 2500 OHM RESISTOR $8.50 |

CL225J1R25 Ohmite 225 Watt 125 Ohm 5 Wirewound Vitreous Enamel Resistor $17.50 |
CL225J2K5 Ohmite 225 Watt 25K Ohm 5 Wirewound Vitreous Enamel Resistor $17.50 |
CL25J7R5 Ohmite 25 Watt 75 Ohm 5 Wirewound Vitreous Enamel Resistor $17.50 |

F404 3 F404 Ohmite New In Box 3 Ohm 40 Watt Resistor F4043 $2.99 |
10 Ohmite Resistor 91 Ohm 2 Watt 5 Carbon Comp RC42GF910J $9.05 |
OHMITE P25J40RE RESISTOR 40 OHM 5 WATT 5 AXIAL $8.50 |

Ohmite RP151FD351KK Variable Resistor Potentiometer 350 OHM Rheostat 50 W $99.00 |
10 Ohmite Slim Mox 108 2 Meg 25W 10 Thick Film Planar Resistors $19.99 |
Lot of 10 Ohmite L50J1R0 Fixed Tubular Bracket Mount Resistors 1 Ohm 50W $36.99 |

Variable Resistor Ohmite 62204 300 300 ohm $25.00 |
CLN225J40R Ohmite 225 Watt 40 Ohm 5 Wirewound Vitreous Enamel Resistor $22.50 |
CLN225J60K Ohmite 225 Watt 60K Ohm 5 Wirewound Vitreous Enamel Resistor $22.50 |

CMC10 3 Ohmite 10 Watt 3 Ohm 1 Wirewound Flange Mount Resistor $17.50 |
CMC10 5K Ohmite 10 Watt 5K Ohm 1 Wirewound Flange Mount Resistor $17.50 |
CMC5 2 Ohmite 5 Watt 02 Ohm 1 Wirewound Flange Mount Resistor $17.50 |

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**680V over OHMITE 100 ohm 225W resistor**

## The Test Methods and Experiences of 8 Resistors

1. Fixed Resistor Testing.

A. Connect the two probes(regardless of positive and negative) to the pins of resistors respecially, the actual resistance value will be measured. In order to improve the measurement accuracy, the measured resistance should be based on the size of the nominal value to select the range. As the scale of the nonlinear Ohm's block, dividing it in the middle of a more refined, pointer indicates the value should be possible to scale fell on the middle position, that is the start of full scale of 20% to 80% within the arc to make the measurements more accurate. According to a different level of resistance error. Reading between the nominal resistance were allowed ± 5%, ± 10% or ± 20% error. If we do not match, beyond the error range, then the resistance value change the value.

B. Note: When you are testing, particularly in the resistance measured over tens of kΩ resistor, hands do not touch the probe and resistance of the conductive part; be detected in the welding of the resistance from the circuit down, at least open a welding head, in order to avoid circuit The impact on other components of the test, resulting in measurement residual; the resistance value of color ring resistor can be able to determined by color ring marks, but is best to test the actual resistance using a multimeter.

2. Cement Resistance Testing.

Detection of resistance of cement and precautions to ordinary fixed resistor with the same test.

3. Fuse Resistors Test.

In the circuit, when the fuse resistor fuse open, you can make judgments based on experience: If it is found fuse resistors or charred black surface, it can be concluded that the overload rating of the current through it many times over due; If the surface without any trace of the open, it indicates that the current flow is equal to or just greater than the rated fuse value of sales. For the surface without any trace of the fuse resistor to judge good or bad, can make use of the multimeter to measure the R × 1 block, to ensure accurate measurement, it should fuse resistors from the circuit on one end of the next weld. If the measured resistance is infinite, then the fuse has failed open circuit resistor, if the measured resistance falls far short of the nominal value, that value of resistance change, we should not be used. In the maintenance of practice found that a small number of resistors in the circuit fuse is short breakdown phenomenon, attention should also be detected.

4. Potentiometer Detection.

Check the potentiometer, the first to turn the rotating handle, turn handle to see whether the smooth rotation, the switch is flexible, switch-pass, short "clicks" is crisp, and listen to the potentiometer and the resistance of the contact point within the body of friction sound, if any "imperfections" sound, indicating poor quality. Test with a multimeter, the first based on the size of the measured resistance of the potentiometer, the appropriate choice of a good multimeter resistance gear, and then according to the following method for testing.

A. Measured with a multimeter's ohm block "1" "2" at both ends, the reading should be nominal for the potentiometer resistance, such as the meter pointer does not move a lot of difference, or resistance, it indicates that the potentiometer is damaged.

B. Detect whether the activities of the potentiometer arm and the resistance of film contact is good or not. The ohm meter test block with "1" "2" ("2" "3") ends of the potentiometer shaft counterclockwise rotation to close the "off" position, when the resistance value as possible. Handle clockwise rotation axis and then slowly, the resistance value should be increased gradually, the pointer in the header should be a smooth move. When the spin axis of the handle to the extreme position of "3", the resistance should be close to the nominal value of the potentiometer. If the multimeter pointer handle potentiometer shaft rotation in the process of jumps, indicating active fault contacts are bad.

5. Positive Temperature Coefficient Thermistor (PTC) Detection.

When detecting, with a multimeter R × 1 block, concrete and two-step operation:

A. Room Temperature Testing (room temperature close to 25 ℃): the two probes touch the two pins PTC thermistors measure the actual resistance, and with the relative ratio of the nominal resistance, the difference between the two is the normal within the ± 2Ω. If the nominal resistance and the resistance of the actual difference is too large, then the performance is bad or damaged.

B. Heating Test: at room temperature, on the basis of the tests are normal, then a second step tests - heat detection, to a heat source (such as electric iron) near the PTC thermistor to its heating, while monitoring the resistance with a multimeter if the value increases with increasing temperature, and if so, that the normal thermal resistance, if resistance did not change, indicating that its performance became inferior and can not be used. Careful not to heat with the PTC thermistor by too close or direct contact with the thermistor in order to prevent their ruined.

6. Negative Temperature Coefficient Thermistor (NTC) Testing.

(1) Measured nominal resistance value Rt NTC thermistor with a multimeter measuring methods and measuring the same way as ordinary fixed resistor, which according to the nominal resistance of NTC thermistor select the appropriate power block can be directly measured actual Rt value. But NTC thermistor is sensitive to temperature, so the test should note the following:

A. Rt is the manufacturer at an ambient temperature measured at 25 ℃, so the Rt measured with a multimeter when the ambient temperature should also be close to 25 ℃, in order to ensure the credibility of the test.

B. Measurement of power shall not exceed the specified value, so that the current measurement error caused by thermal effects.

C. It is operating correctly. Test, and hold your hands to prevent the body temperature of the test impact.

(2) Estimate the temperature coefficient "at"

First measured the value of t1 resistance Rt1 at room temperature, then electric soldering iron for heat, close to the thermistor Rt, measure the resistance RT2, also measured with a thermometer at this time the surface of the thermistor RT and then calculated the average temperature t2.

7. Varistor Testing.

R × 1k with a multimeter to measure the varistor block between the two pins is, the reverse insulation resistance, are infinite, otherwise, that leakage current. If the measured resistance is very small, indicating varistor is damaged, can not be used.

8. Photosensitive Resistance Testing.

A. With a black piece of paper to cover the window light sensitive resistor, when the multimeter pointer remained fixed, the resistance approaches infinity. This value shows the bigger the better performance of photosensitive resistance. If this value is very small or close to zero, indicating photoresistor has burn damage, can not continue to use.

B. Will be a light transmittance of the window aligned photosensitive resistance, when the multimeter pointer swing should be more substantial, more resistance was significantly reduced. The smaller this value the better the performance that photosensitive resistance. If this value is large or even infinite, indicating that the resistance of the internal open-photosensitive damage, can no longer continue.

C. The photosensitive resistor light window light rays aligned with the black pieces of paper on top of the window shade photoresistors shaking, it stopped by the light, this time with the black pieces of paper multimeter pointer should be shaking and side to side. If the meter pointer position does not always stop with the paper in a rock and swing, indicating resistance of the photosensitive photosensitive materials have been damaged.

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