Ohm Resistor
Todays deals on Ohm Resistor?
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*RARE* OTTO WOLFF BERLIN RESISTOR MODEL 3802 0.00001 INTERNATIONAL OHM $4,995.00 |
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*RARE* OTTO WOLFF BERLIN RESISTOR MODEL 3807 0.0001 INTERNATIONAL OHM $4,295.00 |
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0.01Ohm-111kOhm 0.002% Resistance Standard Box Resistor P3026 an-g of L&N,GR,ESI $3,800.00 |
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*RARE* OTTO WOLFF BERLIN RESISTOR MODEL 3740 0.001 INTERNATIONAL OHM $3,895.00 |
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*RARE* OTTO WOLFF BERLIN RESISTOR MODEL 3738 0.01 INTERNATIONAL OHM $3,395.00 |
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ESI Standard Resistor SR104 10,000 Ohms *Tested* NOS $2,429.75 |
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IPC RESISTOR LOAD BANK 10.8kW 3 OHMS DR10.8-3-C $2,499.99 |
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ESI SR104 Standard Resistor 10,000 Ohms *Tested* $2,429.75 |
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Milwaukee Resistor 130 Kw Cont. 260A 1.92 Ohm 500V NEW $2,500.00 |
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Termaline Coaxial Resistor 10,000 WATTS 50 OHMS Model 8936-115 $2,199.99 |
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Termaline Coaxial Resistor 10,000 WATTS 50 OHMS Model 8936-115 $2,199.99 |
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Termaline Coaxial Resistor 10,000 WATTS 50 OHMS Model 8936-115 $2,199.99 |
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Termaline Coaxial Resistor 10,000 WATTS 50 OHMS Model 8936-115 $2,199.99 |
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BIRD TERMALINE COAXIAL RESISTOR MODEL 8921SC13 WATTS 5000 OHMS 50 $1,325.00 |
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Hubbell 30855-007 Type K1, 66A, 1.62Ohms, Short Frame Resistor, Lot of 2 $1,100.00 |
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Resistor + Thermostat 15kV 10kW 1.1Ohm 2.3 Ohm Oil cool $950.00 |
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0.1-111.111Ohm 0.01% Decade resistance box resistor P327an-g GR LEEDS&N ESI IET $800.00 |
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H.V. Diode Bridge + HV Resistor 1 Ohm + Inductor 100 mH $800.00 |
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0.005Ohm-999.9KOhm 0.5% Impedance bridge resistance box resistor P333 ang GR L&N $740.00 |
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Bird 8251 Termaline COAXIAL RESISTOR 1000W ohms 50 $800.00 |
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Power Resistor Decade Box – Claristat/Honeywell 240C 1- 1Meg Ohm $641.45 |
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5000PCS 22K Ohm 8 Commoned Resistor Network Array 9 PIN $787.99 |
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Fluke 789 Process Meter with 250 Ohm HART resistor Loop Calibration MultiMeter $779.99 |
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BRAND NEW IN BOX FLUKE 789 250 Ohm HART resistor PROCESS METER $699.00 |
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KAMAYA RC20GF471J CARBON COMP RESISTOR 470 OHM .5WA – 12000 PCS $700.00 |
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Bird Electronic Corp. 8141 Termaline Coaxial Resistor 250Watt 50Ohm $686.00 |
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Hubbell 30855-007 Type K1, 66A, 1.62Ohms, Short Frame Resistor $625.00 |
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Bonitron m3575r-h16bf resistor module 45 amp 16 ohm $600.00 |
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ESI DB62 decade resistor, 6 decades, range from 0.1 ohm to 111.111 kohms $595.00 |
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ESI DB62 decade resistor, 6 decades, range from 1 ohm to 1.11111 megohms $595.00 |
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ESI DB62 decade resistor, 6 decades, range from 10 ohms to 11.1111 megohms $595.00 |
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POST GLOVER RESISTORS 8LC4.7-DBEN4D2 3.75OHM 13.2KW*NNB $599.00 |
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Post Glover Stainless Steel Grid Resistor 55-191839-006 0.84 OHMS 1290.0 Amps $546.25 |
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Metra laboratory standard resistor, 100 ohm, NIST-calibrated $595.00 |
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0.021 Ohm-111.111kOhm 0.02 Decade resistance box resistor P4831 an-g GR L&N ESI $467.50 |
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100Ohm,100KOhm 0,002% Resistor Standard Resistance P3030 an-g LEEDS & NORTHRUP $520.00 |
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0,001ohm0,002% Resistor Standard Resistance P3031 an-g LEEDS&NORTHRUP ESI,GR $520.00 |
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Lot of 4500 CAL CHIP RM12J221CT 220OHM TOL 5% Resistor $540.00 |
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0.01Ohm-1.111MOhm 0.02% Decade resistance box resistor P4834 an-g of GR L&N ESI $430.00 |
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Brand New! 13Ohm 3328Watt Powerohm Resistor ABB-48431-033R P12822 $500.00 |
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HARS-X-1-1.0 Single Decade Resistor (0 – 10 Ohms in 1 Ohm steps) $500.00 |
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100x1000pcs 470 Ohm 1/4 Watt W Carbon Film Resistors $499.00 |
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100x1000pcs 470 Ohm 1/4 Watt W Carbon Film Resistors $499.00 |
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100x1000pcs 470 Ohm 1/4 Watt W Carbon Film Resistors $499.00 |
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ESI DB52 decade resistor, 5 decades, range from 10 ohms to 1.1111 megohms $449.00 |
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ESI DB52 decade resistor, 5 decades, range from 1 ohm to 111.11 kohms $449.00 |
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ESI DB52 decade resistor, 5 decades, range from 0.1 ohm to 11.111 kohms $449.00 |
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LEEDS & NORTHRUP 4045-B 100,000 OHM STANDARD RESISTOR $450.00 |
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0.001Ohm-0.01Ohm 0.01% Resistor Standard Resistance an-g of Leeds & Northrup ESI $400.00 |
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0.001Ohm 1mOhm 0.01% Resistor Standard Resistance an-g of IET Labs series SRR $400.00 |
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0.01Ohm 10mOhm 0.01% Resistor Standard Resistance an-g of LEEDS & NORTHRUP IET $400.00 |
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Bird Electronic Corp. 8201 Termaline Coaxal Resistor 500W 50ohm $419.00 |
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ESI Dekabox DB62 Decade Resistor 111,111 OHMS $395.95 |
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IPC POST CLOVER DYNAMIC BRAKING RESISTOR 75 OHMS NEW $375.00 |
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Carbon Composite Resistors 82K Ohm (1/4W, 10%) – 5000 Pieces Boxed $395.95 |
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Carbon Composite Resistors 1.8K Ohm (1/4W, 10%) – 5000 Pieces Boxed $395.95 |
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T & M Research Products CVR Current Viewing Resistor .0000995 Ohm 75 Watt $391.98 |
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LOT 25 Ohmite L225J1R0E Roundwound Resistor 1 ohm 225W $375.00 |
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RELIANCE ELECTRIC 48267-L RESISTOR 48267L 9.420OHM NIB $395.00 |
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300W 8ohm POWER WIREWOUND RESISTOR-25PCS $375.00 |
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Post Glover Resistors, Inc. Stainless Steel Grid Resistor G023H .266 OHMS $332.50 |
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Reel of 750 CTS 766141472G 4.7K Ohm 14-Pin Surface Mount Resistors $375.00 |
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POST CLOVER DYNAMIC BRAKING RESISTOR DB30D0 30 OHMS NIB $350.00 |
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LEEDS & NORTHRUP 4040-B 10,000 OHM STANDARD RESISTOR $350.00 |
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LEEDS & NORTHRUP 100 OHM STANDARD RESISTOR $350.00 |
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0.1-1-10-100-1000-10000-100000 Ohm 0.01% Resistor Standard Resistance an-gGenRad $300.00 |
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0.001Ohm 0.01Ohm 0.01% Resistor Standard Resistance an-g of IET-labs GenRad GR $300.00 |
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0.001Ohm 1mOhm 0.01% Resistor Standard Resistance an-g of General Radio SRR $300.00 |
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0.01Ohm 10mOhm 0.01% Resistor Standard Resistance an-g of Fluke 742A , GenRad $300.00 |
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0.1Ohm 100mOhm 0.01% Resistor Standard Resistance an-g of LEEDS & NORTHRUP IET $300.00 |
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1 Ohm 0.01% Resistor Standard Resistance an-g of ESI Electro Scientific Industry $300.00 |
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10 Ohm 0.01% Resistor Standard Resistance an-g of IET Labs series SRR $300.00 |
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100 Ohm 0.1kOhm 0.01% Resistor Standard Resistance an-g of IET Labs SRR GR $300.00 |
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1000 Ohm 1kOhm 0.01% Resistor Standard Resistance an-g of Honeywell , IET Labs $300.00 |
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10 000 Ohm 10kOhm 0.01% Resistor Standard Resistance an-g of LEEDS & NORTHRUP $300.00 |
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100 000 Ohm 100kOhm 0.1MOhm 0.01% Resistor Standard Resistance an-g Fluke 742A $300.00 |
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DALE RER70F1470R POWER WIREWOUND RESISTOR 1477 OHM 20WATTS 1% – 180 PCS $360.00 |
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PANASONIC ERJ2GEJ270X 27 OHM 5% SURFACE MOUNT FILM RESISTORS – 170,000 PCS NEW $350.00 |
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MEPCO RNR65E95R3FS 95.3ohm Precision Hermetic Metal Film Resistors- 104 PCS NEW $350.00 |
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HP Agilent 04284-65004 Resistor ( 100 Ohm ) ” Mint ” $320.00 |
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lot 4500pcs Farnell MCF 0.25W 0R Resistor Zero Ohm Link $299.00 |
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LEEDS & NORTHRUP 4045 100,000 OHM 100K OHM STANDARD RESISTOR $335.75 |
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LEEDS & NORTHRUP 4050 1,000,000 OHM 1 MEG OHM STANDARD RESISTOR $335.75 |
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BIRD 8141 DUMMY LOAD COAXIAL RESISTOR 250 W @ 50 OHM $270.00 |
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0.1 Ohm-99.999KOhm 0.2 Decade resistance box resistor P33 an-g L&N ESI IET GR $235.00 |
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General Radio – Gen Rad – 1433-U Decade Resistor 100 ohm $299.99 |
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ESI DB42 decade resistor, 4 decades, range from 0.1 ohm to 1.111 kohms $295.00 |
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ESI DB42 decade resistor, 4 decades, range from 1 ohm to 11.11 kohms $295.00 |
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4000 KOA RK73H3ATTE15R0F 15 Ohm 1W 1% 2512SMT Resistors $299.99 |
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0510-9705-00 Genrad 510-E 10,000 Ohm Decade Resistor, 1000 Ohm Steps $300.00 |
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Ohmite 35J36R-A Resistors 36 OHMS 5 % Box of 500 New $300.00 |
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Brand New! 300Ohm 524A 824Watt Powerohm Resistor USR000026 $300.00 |
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Leeds & Northrup – Model L.T. 3635 Lab Standard Resistor, 100 ohm – calibrated $295.00 |
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Canare BCP-TA 100 BNC male Resistor Coaxial Termination Impedance 75 Ohm Plug $280.00 |
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ESI Dekabox DB62 Decade Resistor 1,111,110 OHMS $275.95 |
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HP 11102A Standard Resistor – 100 Ohm $275.00 |
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General Resistance Dial-An-Ohm 7 decade resistance box (resistor) – calibrated $269.99 |
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SQUARE D 6715 TW21F TAB WELD RESISTOR 3.85 OHMS NEW CONDITION NO BOX $280.00 |
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LEEDS & NORTHRUP 4035 1000 OHM 1K OHM STANDARD RESISTOR $272.00 |
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LEEDS & NORTHRUP 4040 10,000 OHM 10K OHM STANDARD RESISTOR $272.00 |
Ohm Resistor Questions
How To Repair Monitor Display Dim Problem
This 17″ CRT Relisys OEM Monitor came in with the complaint of dark display (can’t see back raster). Even though at the front panel through the On Screen Display (OSD), you have adjusted to maximum the back raster still would not show out and the whole display appeared quite dim. Normally whenever we see this kind of dim display problem we will head straight to the flyback transformer and adjust the screen (G2) voltage control to increase the voltage to the picture tube so that the display will become brighter again.
Somehow, in certain CRT Monitor designs, there is no screen (G2) control (knob) for you to adjust. It contains only the two knobs for you to adjust the focus (F1 and F2 knobs). Since we can’t find any G2 control at the flyback transformer, one would always search for internal preset brightness control but unfortunately this model doesn’t have one. It has only the B+ control and high voltage control preset. The high voltage preset has been glued with silicon and we can’t simply tune this preset otherwise the Monitor will intermittently go into shutdown mode. The only preset left for you to adjust is the B+ control. Yes it is true that sometimes in certain Monitor you can tune up the B+ control preset to increase the brightness but it is not recommended due to the increase of the B+ voltage will increase the stress of the horizontal output transistor (HOT). The HOT may not last long and sometimes will blow in couple of hours.
In this Monitor, I tried to adjust the B+ preset to see if the brightness would appear or not but the outcome caused the display to go wider and still dim. If I continue to tune the B+ control, I’m afraid the HOT may blow in a very short time! This is just an experiment only, remember that do not tune the B+ control without a good reason.
After the Monitor had been used for couple of years, the CRT cathodes (emission) may have become weak and this caused the display to go dim. In order to make the display to become brighter again, you can increase the heater voltage from 6.3 volt to about 8 to 9 Volts. Or you can modify the G2 circuit to increase the voltage without tuning any B+ or high voltage preset in the Monitor. In this article I’m touching only on the modification of the G2 circuit.
Since the flyback transformer does not have the G2 control thus we can’t trace from the flyback to look for the G2 wire. In fact we can trace backward from the CRT board to see at where the G2 wire came from. Yes it came from the Main board and not from the flyback transformer. Upon turning back the Main board, one can easily see the small G2 circuit that contains a diode, high voltage capacitor and some very high ohm resistor.
This is how the G2 circuit work. The high pulse AC supply came from one of the flyback transformer secondary pin and it go through an Ultra fast recovery diode. The function of the diode is to convert the high ac pulse into DC voltage and the high voltage capacitor (102 2kv-resin ceramic types) is to use to filter off the high frequency ripple and then the voltage flow through the resistors and the resistors determines (set) the output voltage. Once you understand how this circuit work you can easily modify the circuit or change the value of the resistors to make the G2 voltage increase.
From the picture you could clearly see that by removing the jumper and added in a 4.4 Mega Ohm (2.2M in series with another 2.2 M gave the result of 4.4 M Ohm) I could easily increase the G2 voltage. You may ask “How do you get the 4.4 M value?” In fact I tried few high ohm resistor values like starting from 100 K and then 1 M then 2.2 M before I conclude that 4.4 M ohm have the best display (brightness). If you remove the jumper (link) the display will become too bright and not good for the user.
In some Monitor designs, the G2 voltage can be in the highest value and if this happen no matter what resistor value you change or modify the circuit, the G2 output is voltage is still the same because the G2 voltage already in the maximum. You can only lower down the G2 voltage and there is no way to increase the G2 voltage! If this happen then you have to modify the heater voltage to increase the brightness.
Conclusion-In fact in any electronic circuit, if you truly understand how a particular circuit work, you can actually do some modification to make the electronic equipment work again. If the electronic equipment is considered beyond repair, there is no harm in trying out any modification method that you may think is the best to make the electronic equipment to work again. In order to do that, you must first equip yourself to have a basic understanding of electronics theory. For your information, the above problem was a common fault and I’ve already solved lots of it and made some nice income from a simple 10 minutes job. Have a great day my friend!
About the Author
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