Ohmite Resistors

See More About:    Ohmite Resistor        

We offer Ohmite Resistors shoppers a unique range of products from on all over the world. Unlike your traditional retailer, Electrical Stores is an online auction website with most listings offering a unparalleled characteristic called "Buy It Now" option.

**Please Enable JavaScript to Navigate Thru Our Listings**
**Click Here for Instructions**

10 Pcs Ohmite 1 OHM 5W WIRE WOUND CEMENT FILLED CERAMIC POWER RESISTOR 5 NEW
10 Pcs Ohmite 1 OHM 5W WIRE WOUND CEMENT FILLED CERAMIC POWER RESISTOR 5 NEW
$0.99
quality
OHMITE  RESISTOR  D100K50R  WATT 100 OHM 50      1013
OHMITE RESISTOR D100K50R WATT 100 OHM 50 1013
$20.00
quality
OHMITE RESISTOR L100J500 WATT 100 OHM 500      1013
OHMITE RESISTOR L100J500 WATT 100 OHM 500 1013
$20.00
quality
OHMITE RESISTOR  L100J50R   WATT 100 OHM 50     1013
OHMITE RESISTOR L100J50R WATT 100 OHM 50 1013
$20.00
quality
2 pcs 20J22R OHMITE AXIAL WIREWOUND RESISTORS 22 Ohm 10W 5 VITREOUS ENAMEL
2 pcs 20J22R OHMITE AXIAL WIREWOUND RESISTORS 22 Ohm 10W 5 VITREOUS ENAMEL
$5.99
quality
Ohmite Resistors 620HR005
Ohmite Resistors 620HR005
$6.95
quality
OHMITE Resistor P N 9607 100W 10 OHM UPC L100J10R NIB
OHMITE Resistor P N 9607 100W 10 OHM UPC L100J10R NIB
$8.99
quality
OHMITE NON IND VITREOUS ENAMELED RESISTORS LN100J5R0 NIB LOT OF 3
OHMITE NON IND VITREOUS ENAMELED RESISTORS LN100J5R0 NIB LOT OF 3
$29.99
quality
NOS Ohmite Dividohm Resistor 200 ohms 50 Watts 050 Amps
NOS Ohmite Dividohm Resistor 200 ohms 50 Watts 050 Amps
$14.99
quality
NOS Ohmite Dividohm Resistor 15 ohms 10 Watts 0816 Amps
NOS Ohmite Dividohm Resistor 15 ohms 10 Watts 0816 Amps
$19.99
quality
NOS Ohmite Dividohm Resistor 300 ohms 25 Watts 0288 Amps
NOS Ohmite Dividohm Resistor 300 ohms 25 Watts 0288 Amps
$19.99
quality
NOS Ohmite Dividohm Resistor 1500 ohms 10 Watts 0079 Amps
NOS Ohmite Dividohm Resistor 1500 ohms 10 Watts 0079 Amps
$19.99
quality
Ohmite Resistor 40J75R 10 watt 75 OHMS Qty 3 3770A
Ohmite Resistor 40J75R 10 watt 75 OHMS Qty 3 3770A
$4.35
quality
NOS Ohmite Dividohm Resistor 7500 ohms 10 Watts 0033 Amps
NOS Ohmite Dividohm Resistor 7500 ohms 10 Watts 0033 Amps
$19.99
quality
NOS Ohmite Dividohm Resistor 2500 ohms 25 Watts
NOS Ohmite Dividohm Resistor 2500 ohms 25 Watts
$19.99
quality
NOS Ohmite Dividohm Resistor 200 ohms 25 Watts 0353 Amps
NOS Ohmite Dividohm Resistor 200 ohms 25 Watts 0353 Amps
$19.99
quality
40JR50 ohmite resistor 05 OHM 10W 5 AXIAL LOT of 25 pcs
40JR50 ohmite resistor 05 OHM 10W 5 AXIAL LOT of 25 pcs
$5.95
quality
OHMITE SERIES 88 RESISTOR 392 0HMS 1
OHMITE SERIES 88 RESISTOR 392 0HMS 1
$1.00
quality
1 vintage 1000 ohms 12 watt Ohmite brown devil resistor
1 vintage 1000 ohms 12 watt Ohmite brown devil resistor
$4.09
quality
3 PCs OHMITE L25J4K0E RESISTOR POWER 4KOHM 25W 5
3 PCs OHMITE L25J4K0E RESISTOR POWER 4KOHM 25W 5
$7.99
quality
Ohmite Vitreous Enameled Resistor 0306 200 Watt 250 Ohms New Old Stock
Ohmite Vitreous Enameled Resistor 0306 200 Watt 250 Ohms New Old Stock
$20.00
quality
Ohmite Lug Resistor L175J5R0 175 Watt 5 Ohm
Ohmite Lug Resistor L175J5R0 175 Watt 5 Ohm
$17.00
quality
NEW NIB OHMITE D225K50R POWER RESISTOR 225W 50 OHMS 38
NEW NIB OHMITE D225K50R POWER RESISTOR 225W 50 OHMS 38
$20.00
quality
NEW NIB OHMITE DIVIDOHM 210 225P 46 POWER RESISTOR 225W 1500 OHMS 38
NEW NIB OHMITE DIVIDOHM 210 225P 46 POWER RESISTOR 225W 1500 OHMS 38
$20.00
quality
OHMITE DIVIDOHM 0383B RESISTOR VITREOUS ENAMELED 25W 7K OHM 25 WATT 7000 OHM
OHMITE DIVIDOHM 0383B RESISTOR VITREOUS ENAMELED 25W 7K OHM 25 WATT 7000 OHM
$5.00
quality
OHMITE DIVIDOHM 0370 RESISTOR VITREOUS ENAMELED 25W 200 OHM 25 WATT 5
OHMITE DIVIDOHM 0370 RESISTOR VITREOUS ENAMELED 25W 200 OHM 25 WATT 5
$5.00
quality
OHMITE 1542 BROWN DEVIL RESISTOR VITREOUS ENAMELED 35K OHMS 8 WATT 3500 OHM 5
OHMITE 1542 BROWN DEVIL RESISTOR VITREOUS ENAMELED 35K OHMS 8 WATT 3500 OHM 5
$2.00
quality
OHMITE DIVIDOHM D12K10R RESISTOR VITREOUS ENAMELED 12 W 150 OHM 12 WATT 5
OHMITE DIVIDOHM D12K10R RESISTOR VITREOUS ENAMELED 12 W 150 OHM 12 WATT 5
$5.00
quality
OHMITE DIVIDOHM 1031 RESISTOR VITREOUS ENAMELED 25W 4K OHM 25 WATT 4000 OHM
OHMITE DIVIDOHM 1031 RESISTOR VITREOUS ENAMELED 25W 4K OHM 25 WATT 4000 OHM
$5.00
quality
OHMITE DIVIDOHM 0389 RESISTOR VITREOUS ENAMELED 25W 8K OHM 12 WATT 8000 OHM 5
OHMITE DIVIDOHM 0389 RESISTOR VITREOUS ENAMELED 25W 8K OHM 12 WATT 8000 OHM 5
$5.00
quality
OHMITE DIVIDOHM RESISTOR W BRACKETS 25W 25K OHM 12 WATT 5
OHMITE DIVIDOHM RESISTOR W BRACKETS 25W 25K OHM 12 WATT 5
$5.00
quality
OHMITE DIVIDOHM RESISTOR VITREOUS ENAMELED W BRACKETS 12W 150 OHM 12 WATT 5
OHMITE DIVIDOHM RESISTOR VITREOUS ENAMELED W BRACKETS 12W 150 OHM 12 WATT 5
$5.00
quality
OHMITE DIVIDOHM D12K7RS RESISTOR VITREOUS ENAMELED 12W 75 OHM 12WATT 7500OHM 5
OHMITE DIVIDOHM D12K7RS RESISTOR VITREOUS ENAMELED 12W 75 OHM 12WATT 7500OHM 5
$5.00
quality
OHMITE DIVIDOHM D12K7R0 RESISTOR VITREOUS ENAMELED 12W 5 OHM 12 WATT 5
OHMITE DIVIDOHM D12K7R0 RESISTOR VITREOUS ENAMELED 12W 5 OHM 12 WATT 5
$5.00
quality
NEW 50 OHMS ADJUSTABLE 225 WATT OHMITE RESISTOR  B 1
NEW 50 OHMS ADJUSTABLE 225 WATT OHMITE RESISTOR B 1
$15.00
quality
NEW IN BOX OHMITE ADJUSTABLE RESISTOR RH55KO 5 KO 25W MODEL HOHMS 5000 268 2
NEW IN BOX OHMITE ADJUSTABLE RESISTOR RH55KO 5 KO 25W MODEL HOHMS 5000 268 2
$18.00
quality
Ohmite 8 ohm 112 AMP 1000 Wattt Resistor 89C
Ohmite 8 ohm 112 AMP 1000 Wattt Resistor 89C
$99.99
quality
OHMITE D50K10R RESISTOR 50W 10 OHM NIB
OHMITE D50K10R RESISTOR 50W 10 OHM NIB
$4.99
quality
NEW IN BOX OHMITE P N 0206 FIXED RESISTOR 25 WATTS 1500 OHMS
NEW IN BOX OHMITE P N 0206 FIXED RESISTOR 25 WATTS 1500 OHMS
$9.85
quality
NEW IN BOX OHMITE DIVIDOHM P N 0585 RESISTOR 50 WATTS 25000 OHMS
NEW IN BOX OHMITE DIVIDOHM P N 0585 RESISTOR 50 WATTS 25000 OHMS
$12.99
quality
Ohmite 24000 Spec No 65770 9949 Resistor 88C
Ohmite 24000 Spec No 65770 9949 Resistor 88C
$169.99
quality
NEW IN BOX OHMITE D225K1K5 225 WATT 1500 OHM RESISTOR
NEW IN BOX OHMITE D225K1K5 225 WATT 1500 OHM RESISTOR
$19.99
quality
500 NOS OHMITE 39K 1 2 WATT CARBON COMP RESISTORS FOR TUBE AMPLIFIER PARTS
500 NOS OHMITE 39K 1 2 WATT CARBON COMP RESISTORS FOR TUBE AMPLIFIER PARTS
$160.00
quality
NEW IN BOX OHMITE D225K4R0 225 WATT 4 OHM RESISTOR
NEW IN BOX OHMITE D225K4R0 225 WATT 4 OHM RESISTOR
$19.99
quality
1 NIB OHMITE TAP600K22RE HEAT SINKABLE PLANAR RESISTOR
1 NIB OHMITE TAP600K22RE HEAT SINKABLE PLANAR RESISTOR
$39.50
quality
2 Pcs Ohmite 750 OHM 100 WATT Enameled Wire Wound RESISTOR PANEL MOUNT NIB
2 Pcs Ohmite 750 OHM 100 WATT Enameled Wire Wound RESISTOR PANEL MOUNT NIB
$24.99
quality
Lot Of 3 Enamel Resistors Ohmite Clarostat 1 To 100 5k Dual 200 Ohms TESTED
Lot Of 3 Enamel Resistors Ohmite Clarostat 1 To 100 5k Dual 200 Ohms TESTED
$14.99
quality
OHMITE 10K OHM 50W 50 WATT WIREWOUND RESISTOR NOS NEW
OHMITE 10K OHM 50W 50 WATT WIREWOUND RESISTOR NOS NEW
$11.95
quality
LOT 2 OHMITE ASSORTED FVE 155 2 RESISTOR D326970
LOT 2 OHMITE ASSORTED FVE 155 2 RESISTOR D326970
$26.00
quality
OHMITE DIVIDEOHM NO 0783 RESISTOR 5000 OHMS NNB
OHMITE DIVIDEOHM NO 0783 RESISTOR 5000 OHMS NNB
$8.00
quality
OHMITE BROWN DEVIL 1755 10K OHMS RESISTOR
OHMITE BROWN DEVIL 1755 10K OHMS RESISTOR
$2.75
quality
OHMITE B12J15R 15 OHMS 12 WATTS RESISTOR NNB
OHMITE B12J15R 15 OHMS 12 WATTS RESISTOR NNB
$4.50
quality
Large Lot Vintage Carbon Resistors A B IRC Ohmite 1 2 to 2 Watt
Large Lot Vintage Carbon Resistors A B IRC Ohmite 1 2 to 2 Watt
$720.00
quality
OHMITE Model K Rheostat Resistor 5 Ohms 141 Amp Hardware Not Included
OHMITE Model K Rheostat Resistor 5 Ohms 141 Amp Hardware Not Included
$39.99
quality
OHMITE L25J1K0 Resistor 1000 Ohms 25W Lot of 4
OHMITE L25J1K0 Resistor 1000 Ohms 25W Lot of 4
$29.99
quality
5 PCs OHMITE 23J10RE RESISTOR WIREWOUND 10 OHM 3W 5
5 PCs OHMITE 23J10RE RESISTOR WIREWOUND 10 OHM 3W 5
$5.99
quality
OHMITE VARIABLE RESISTOR  RP151FD351KK NSN 5905 00 549 5663 M22 05 00201FD
OHMITE VARIABLE RESISTOR RP151FD351KK NSN 5905 00 549 5663 M22 05 00201FD
$105.00
quality
OHMITE VARIABLE RESISTOR  RP151FD201KK NSN 5905 00 615 2071 M22 05 0018 1FD
OHMITE VARIABLE RESISTOR RP151FD201KK NSN 5905 00 615 2071 M22 05 0018 1FD
$198.50
quality
30x Ohmite 45JR10 5W 1 Silicone Ceramic Conformal Axial Wirewound Resistor
30x Ohmite 45JR10 5W 1 Silicone Ceramic Conformal Axial Wirewound Resistor
$35.99
quality
Ohmite DividOhm Resistor 210 225P 46 1356B BRANDNEWnBOX
Ohmite DividOhm Resistor 210 225P 46 1356B BRANDNEWnBOX
$27.95
quality
Ohmite DividOhm Resistor 270 100M 40 0614 BRAND NEWnBOX
Ohmite DividOhm Resistor 270 100M 40 0614 BRAND NEWnBOX
$4.95
quality
Ohmite DividOhm Resistor 210 225P 46 1363 210225P46 225
Ohmite DividOhm Resistor 210 225P 46 1363 210225P46 225
$9.95
quality
10 Pcs Ohmite 680K Ohm 2 Watt 10 RC42GF684K Carbon Comp Resistor
10 Pcs Ohmite 680K Ohm 2 Watt 10 RC42GF684K Carbon Comp Resistor
$7.22
quality
OHMITE 0788 DIVIDOHM RESISTOR 25000 0HMS 75 WATTS NIB
OHMITE 0788 DIVIDOHM RESISTOR 25000 0HMS 75 WATTS NIB
$19.95
quality
Ohmite 1118 Resistor 1500 Ohms 022A
Ohmite 1118 Resistor 1500 Ohms 022A
$11.95
quality
Ohmite RJS800 Resistor 800 Ohms 0250A
Ohmite RJS800 Resistor 800 Ohms 0250A
$19.95
quality
Ohmite RJS800 Resistor 800 Ohms 0250A Used
Ohmite RJS800 Resistor 800 Ohms 0250A Used
$19.95
quality
OHMITE 83F165 1 165 OHM 3W WIREWOUND RESISTOR NEW
OHMITE 83F165 1 165 OHM 3W WIREWOUND RESISTOR NEW
$9.90
quality
Ohmite Vitreous Enamel Conformal Axial terminal Wirewound Resistors 23J6K8 3
Ohmite Vitreous Enamel Conformal Axial terminal Wirewound Resistors 23J6K8 3
$0.99
quality
Ohmite Vitreous Enamel Conformal Axial terminal Wirewound Resistors  21J1K0
Ohmite Vitreous Enamel Conformal Axial terminal Wirewound Resistors 21J1K0
$0.99
quality
OHMITE VINTAGE RESISTOR BROWN DEVIL 350 12W7816
OHMITE VINTAGE RESISTOR BROWN DEVIL 350 12W7816
$6.00
quality
Resistor Power with Mount Heatsink 10 ohm 11 22 watt 5 Quantity 1
Resistor Power with Mount Heatsink 10 ohm 11 22 watt 5 Quantity 1
$2.91
quality
Resistor Power w Mount Heatsink 20 ohm Ohmite 11 22 watt 5 Quantity 1
Resistor Power w Mount Heatsink 20 ohm Ohmite 11 22 watt 5 Quantity 1
$2.91
quality
Ohmite Lug Resistor 300Watt 4ohm 1pc
Ohmite Lug Resistor 300Watt 4ohm 1pc
$21.00
quality
5 Ohmite fixed resistor 25 watts 25K ohms L25J25K
5 Ohmite fixed resistor 25 watts 25K ohms L25J25K
$15.00
quality
LOT 2 NEW OHMITE ASSORTED D175K50R D225K25R 25 50OHMS 175 225W RESISTOR B215569
LOT 2 NEW OHMITE ASSORTED D175K50R D225K25R 25 50OHMS 175 225W RESISTOR B215569
$30.00
quality
RESISTOR OHMITE 10 OHMS 100W RESISTANCE ELECTRICAL
RESISTOR OHMITE 10 OHMS 100W RESISTANCE ELECTRICAL
$23.09
quality
Ohmite L225J25R Vitreous Enameled Resistor
Ohmite L225J25R Vitreous Enameled Resistor
$27.99
quality
Ohmite 68A7963P1N Enameled Resistor
Ohmite 68A7963P1N Enameled Resistor
$192.99
quality
Ohmite Ohm Ranger Stock 3420 Variable Resistor Test Box
Ohmite Ohm Ranger Stock 3420 Variable Resistor Test Box
$84.95
quality
Ohmite D225K25R Lug Resistor NIB
Ohmite D225K25R Lug Resistor NIB
$12.00
quality
3 pieces Adjustable Resistor Ohmite Dividohm p n 0795 New htf
3 pieces Adjustable Resistor Ohmite Dividohm p n 0795 New htf
$45.00
quality
Ohmite L225J500 500 ohm 225W Lug Resistor 8202D
Ohmite L225J500 500 ohm 225W Lug Resistor 8202D
$29.99
quality
NEW OHMITE D100K4R0 4 OHM 100W RESISTOR D252986
NEW OHMITE D100K4R0 4 OHM 100W RESISTOR D252986
$20.00
quality
2 Pcs Ohmite 100 000 OHM 225 WATT Enameled Wire Wound RESISTOR PANEL MOUNT NIB
2 Pcs Ohmite 100 000 OHM 225 WATT Enameled Wire Wound RESISTOR PANEL MOUNT NIB
$59.99
quality
Ohmite 81 2 R 45 N 190 6167 190 Ohm Resistor
Ohmite 81 2 R 45 N 190 6167 190 Ohm Resistor
$9.00
quality
Vintage 15 Inch RW31G5RO 5 OHMS 10 W NOM OHMITE Ceramic Tube Resistor
Vintage 15 Inch RW31G5RO 5 OHMS 10 W NOM OHMITE Ceramic Tube Resistor
$1.99
quality
OHMITE RESISTORS 0906 100W OHMS100 NEW MADE IN THE UNITED STATES
OHMITE RESISTORS 0906 100W OHMS100 NEW MADE IN THE UNITED STATES
$7.60
quality
New OHMITE Thin Resistor Stackohm D50K5R0 50watt 5ohm Warranty Fast Shipping
New OHMITE Thin Resistor Stackohm D50K5R0 50watt 5ohm Warranty Fast Shipping
$20.00
quality
New OHMITE Thin Resistor Stackohm D50K10R 50watt 10ohm Warranty Fast Shipping
New OHMITE Thin Resistor Stackohm D50K10R 50watt 10ohm Warranty Fast Shipping
$20.00
quality
OHMITE 2839 51 OHMS 5 WATT RESISTOR NNB
OHMITE 2839 51 OHMS 5 WATT RESISTOR NNB
$2.50
quality
OHMITE 0364B DIVIDOHM RESISTOR VITREOUS ENAMELED W BRACKETS 25W 20 OHM 25 WATT
OHMITE 0364B DIVIDOHM RESISTOR VITREOUS ENAMELED W BRACKETS 25W 20 OHM 25 WATT
$5.00
quality
OHMITE Wirewound Resistors 10 OHM 10W 5PCS NEW 80J10R
OHMITE Wirewound Resistors 10 OHM 10W 5PCS NEW 80J10R
$6.00
quality
Didn"t find what your looking for? Search our real time inventory below...

Ohmite Resistors

See More About:    Ohmite Resistor        
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.

For more categories of resistors, please go to http://www.hqew.net/product/procategorieslist.html have a review.

Here"s a list of other products on Electrical Stores, come check these out:

See More About:    Ohmite Resistor        

Other Items People View After These Listings About