Resistor Precision
Resistor Precision
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HP Agilent 42851A Precision Q Adapter 100 Ohm Resistor |  |
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US $3,950.00 | 1h 53m |
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NEW 50PCS 3296 Variable Resistors Pack High Precision | |
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US $11.00 | 2h 10m |
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Simmonds Precision Thermal Resistor | |
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US $699.99 | 2h 38m |
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20 Special Hi End Precision Resistor Assortment New JAN | |
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US $15.00 | 2h 54m |
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Metal Film Precision Resistors 15M 1 1 4W new Qty100 | |
0 Bid | US $.99 | 4h 12m |
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Precision Variable Decade Resistor Resistance Box ZX21 | |
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US $90.00 | 4h 46m |
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10K ohm Precision 3296 Variable ResistorVRTrimmerx10 | |
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US $4.99 | 5h 34m |
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40pcs 4 values High Precision 3296 Variable Resistors | |
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US $9.99 | 11h 38m |
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3362P Variable Resistor Precision 50 pcs | |
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US $10.99 | 13h 25m |
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P BASS PRECISION BASS 53 55 VINTAGE capacitor resistor | |
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US $14.00 | 14h 45m |
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20 pcs 01 PRECISION POWER RCD RESISTORS 250ohm 3W | |
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US $3.95 | 14h 53m |
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Lot of 25 Precision Metal Film Resistor 332 OHM 1 | |
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US $11.95 | 15h 55m |
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Dale RH 250 Precision Power Resistor Lot 120W 536 OHMs | |
0 Bid | US $9.99 | 17h 55m |
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Set of Precision Wire Wound Russian Resistors Lot 60 2 | |
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US $8.90 | 18h 22m |
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Set of Precision Wire Wound Russian Resistors Lot 60 4 | |
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US $8.90 | 18h 22m |
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SALE 13 Ohm 5W Precision Wire Wound Resistors Lot 80 | |
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US $3.90 | 18h 27m |
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SALE 75 Ohm 8W Precision Wire Wound Resistors 30ps | |
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US $2.00 | 18h 27m |
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200 KOA RK73H RESISTORS PRECISION 051 THICK FILM | |
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US $2.99 | 18h 34m |
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Sealed 2 X 4000 ohm Precision Instrument Resistor 1 | |
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US $3.95 | 20h 47m |
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10pk RN65H 156k 3 4w 1 2 Precision Metal Film Resistor | |
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US $1.00 | 21h 26m |
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3362P Variable Resistor Precision 25 pcs | |
1 Bid | US $5.99 | 1d 1h 5m |
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W W 350000 ohm Precision Instrument Resistor 1 | |
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US $3.95 | 1d 5h 57m |
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W W 231700 ohm Precision Instrument Resistor 1 2 | |
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US $3.95 | 1d 6h 23m |
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W W 490000 ohm Precision Instrument Resistor 1 2 | |
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US $3.95 | 1d 6h 31m |
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W W 485200 ohm Precision Instrument Resistor 1 2 | |
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US $3.95 | 1d 6h 40m |
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W W 100 ohm Precision Instrument Resistor 1 | |
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US $3.95 | 1d 6h 47m |
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W W 56000 ohm Precision Instrument Resistor | |
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US $3.95 | 1d 7h 24m |
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MEPCO W W 416000 ohm Precision Instrument Resistor | |
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US $3.95 | 1d 7h 32m |
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10pcs3296 101 100ohm Variable Resistor Precision | |
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US $2.99 | 1d 13h 55m |
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10pcs3296 102 1K Variable Resistor Precision | |
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US $2.99 | 1d 13h 55m |
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10pcs3296 103 10K Variable Resistor Precision | |
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US $2.99 | 1d 13h 55m |
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10pcs3296 104 100K Variable Resistor Precision | |
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US $2.99 | 1d 13h 55m |
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10pcs3296 105 1M Variable Resistor Precision | |
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US $2.99 | 1d 13h 55m |
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10pcs3296 201 200ohm Variable Resistor Precision | |
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US $2.99 | 1d 13h 55m |
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10pcs3296 202 2K Variable Resistor Precision | |
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US $2.99 | 1d 13h 55m |
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10pcs3296 203 20K Variable Resistor Precision | |
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US $2.99 | 1d 13h 55m |
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10pcs3296 204 200K Variable Resistor Precision | |
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US $2.99 | 1d 13h 55m |
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10pcs3296 501 500ohm Variable Resistor Precision | |
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US $2.99 | 1d 13h 55m |
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10pcs3296 502 5K Variable Resistor Precision | |
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US $2.99 | 1d 13h 55m |
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10pcs3296 503 50K Variable Resistor Precision | |
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US $2.99 | 1d 13h 56m |
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10pcs3296 504 500K Variable Resistor Precision | |
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US $2.99 | 1d 13h 56m |
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10pcs3362 101 100ohm Variable Resistor Precision | |
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US $1.99 | 1d 13h 56m |
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10pcs3362 102 1K Variable Resistor Precision | |
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US $1.99 | 1d 13h 56m |
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10pcs3362 103 10K Variable Resistor Precision | |
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US $1.99 | 1d 13h 56m |
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10pcs3362 104 100K Variable Resistor Precision | |
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US $1.99 | 1d 13h 56m |
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10pcs3362 105 1M Variable Resistor Precision | |
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US $1.99 | 1d 13h 56m |
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10pcs3362 201 200ohm Variable Resistor Precision | |
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US $1.99 | 1d 13h 56m |
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10pcs3362 202 2K Variable Resistor Precision | |
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US $1.99 | 1d 13h 56m |
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10pcs3362 203 20K Variable Resistor Precision | |
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US $1.99 | 1d 13h 56m |
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10pcs3362 204 200K Variable Resistor Precision | |
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US $1.99 | 1d 13h 56m |
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10pcs3362 501 500ohm Variable Resistor Precision | |
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US $1.99 | 1d 13h 56m |
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10pcs3362 502 5K Variable Resistor Precision | |
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US $1.99 | 1d 13h 56m |
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10pcs3362 503 50K Variable Resistor Precision | |
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US $1.99 | 1d 13h 56m |
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10pcs3362 504 500K Variable Resistor Precision | |
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US $1.99 | 1d 13h 56m |
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50 VINTAGE 110 OHM 1 RN70D PRECISION RESISTORS | |
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US $12.99 | 1d 14h 13m |
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100 MepcoElectra RN55D57R6F 576ohm Precision Resistors | |
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US $12.99 | 1d 15h 22m |
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100 MepcoElectra RN55D64R9F 649ohm Precision Resistors | |
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US $12.99 | 1d 15h 22m |
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NEW Precision Shunt Resistors 1 082 ohm SMD Qty 100 | |
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US $39.95 | 1d 15h 31m |
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Qty 20 NEW Precision Shunt Resistors 1 082 ohm SMD | |
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US $9.95 | 1d 16h 2m |
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6 Dale LVR 10 01Ω 1 10W Precision WW Resistors | |
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US $12.99 | 1d 16h 32m |
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99 VINTAGE M E RN60D 887K 1 2W 1 PRECISION RESISTORS | |
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US $12.99 | 1d 16h 52m |
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Set of Precision Wire Wound Russian Resistors Lot 60 1 | |
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US $8.90 | 1d 18h 15m |
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New 50 pcs 3296 Variable Resistor Pack High Precision | |
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US $13.55 | 1d 22h 37m |
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Caddock TF656N Film Resistor High Precision | |
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US $8.00 | 2d 2h 35m |
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80Pc 3096 High Precision Variable Resistor Kit 50 100K | |
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US $10.11 | 2d 8h 19m |
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100 TRW IRC RN60D 301R 1 PRECISION RESISTORS | |
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US $12.99 | 2d 11h 35m |
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3327 Ohm m PRECISION RESISTOR WIRE MANGANIN NET 218g | |
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US $62.62 | 2d 17h 33m |
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100 Om 5W Precision Wire Wound Russian Resistors 70 pcs | |
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US $9.95 | 2d 18h 25m |
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MUTER 500OHM PRECISION RHEOSTAT RESISTOR INSTRUMENT | |
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US $10.00 | 2d 19h 24m |
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DEJUR 20000OHM PRECISION RHEOSTAT RESISTOR INSTRUMENT | |
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US $10.00 | 2d 19h 24m |
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1 Dale Precision Power Resistor 32K ohm 1 RH 10 | |
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US $5.25 | 2d 23h 18m |
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30 pcs PHILIPS 332 ohm 1 watt 1 Precision Resistor | |
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US $2.00 | 3d 1h 26m |
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100 ohm Precision 3296 Variable ResistorVRTrimmerx10 | |
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US $4.99 | 3d 3h 45m |
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10 ohm Precision 3296 Variable ResistorVRTrimmerx10 | |
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US $9.99 | 3d 4h |
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20 ohm Precision 3296 Variable ResistorVRTrimmerx10 | |
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US $9.99 | 3d 4h 4m |
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50 ohm Precision 3296 Variable ResistorVRTrimmerx10 | |
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US $9.99 | 3d 4h 9m |
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500 ohm Precision 3296 Variable ResistorVRTrimmerx10 | |
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US $4.99 | 3d 4h 17m |
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5K ohm Precision 3296 Variable ResistorVRTrimmerx10 | |
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US $4.99 | 3d 4h 25m |
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2K ohm Precision 3296 Variable ResistorVRTrimmerx10 | |
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US $4.99 | 3d 4h 32m |
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20K ohm Precision 3296 Variable ResistorVRTrimmerx10 | |
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US $4.99 | 3d 4h 34m |
How to aim a laser beam on a photoresistor 40m away?
I need to direct a laser beam from a cheap laser pointer to a photoresistor 40m away. The area of the resistor is less than 1 sq. cm., so the pointer needs to be aligned precisely. I tried fixing the pointer on a camera tripod but I need more precision. Any ideas on how to do this?
The problem is aiming correctly.
I once had a telescope that had an alignment ring for the viewfinder. This was a ring with 3 screws around it and the viewfinder in the middle. You could use a screwdriver to turn each of the screws and thus aim easily by moving the viewfinder in very fine steps.
I was thinking that maybe something like that existed for this particular application, that I could find easily.
Although a theodolite would be perfect, it's way out of my project's budget...any other ideas?
One could make a fairly precise aiming device from two strap hinges, 2 springs (moderately stiff) , 2 machine screws (preferably fairly fine thread) and 2 wing or knurled nuts. Placing the spring between the two leaves of the spring with the screw holding it together give one a fine angle adjustment, connecting two at right angles can give one altitude and azimuth adjustment. Attach your pointer to the assembly, and the assembly to a sturdy support (perhaps you tripod with some ballast, maybe a jug of water or a sandbag)
EDIT;
As an example, supposing one got hinges that were 10cm between the hinge pin and the hole the bolt goes through, further the bolt has a thread pitch of 0.5mm , in this case, about a 20° turn of the adjusting nut will make a one minute of arc change in the angle of the hinge, I would guess that with a moderately stiff spring to remove slack from the mechanism, a light touch on the screw and a very sturdy support, a couple arc seconds adjustment might be possible
One might also _try_ a lens to diverge the beam a bit, while this will reduce the light falling on the photo resistor, it might still be enough and could make aiming easier.
Five Band Resistor Color Code - What Does The Last Band Of White Color Represent?
In electronic repair, most of the time I came across five band resistor color code. The purpose of using the five color band resistor in a circuit is that it will provide a more accurate value compare to the four color band. For example in order to get the value of 22.6kohm, with four colors band resistor you will not be able to find it. The most you can get is 22k (red, red, orange and gold). If with the five color band you will be able to calculate it (red, red, blue, red, brown)the last color which is brown represent 1% tolerance. You may go to google search engine and type resistor color code, resistor color coding, resistor color code calculator, or resistor color code chart to know more about how to calculate a five band resistor values.
If you open up an analog multimeter you will understand what I mean. Most of the resistors circuit inside the multimeter are using five color band. Why? Because the reading that you get whenever you measure current, voltage or ohm, the panel will show the nearest value. For instance, if you measure a 9v battery the needle will point to may be 8.9v, 9v, or 9.1 volt. If that particular multimeter was designed using four color band resistor the result that it gets may be 8.5v, 9.5v or even 10 volt. In other words the use of five color band resistor is to make a circuit more precise and output the desire result as what the engineers want it to be.
There was a interesting five color band resistor which was very unique. In fact i have already seen quite a number of them. I will reveal the calculation about this unique five color band resistor. The colors are orange, orange, red, gold, white. Actually it is a four color band resistor. Just ignore the white color and proceed to calculate using the four color band formula. As to why the resistor manufacturers add this 'extra' white band i really do not know. However, from forum someone said that it is for the military purposes. If you know the answer i would like you to email me so that I can share with other fellow electronic repairer through this info repairing newsletter.
About the Author
Check out the two links below. You will be pleasantly surprised to find out that LCD and Electronic Repairs are so Easy and Highly Profitable for even a novice. You can learn the repairing secrets easily.
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Vishay Bulk Metal® Foil Resistor PCR Performance (Product Demo)
