Polystyrene Capacitor
Todays deals on Polystyrene Capacitor?
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GR GENERAL RADIO 1419-A Polystyrene DECADE CAPACITOR $250.00 |
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30kV 0.2µF High Voltage Polystyrene capacitor HAM audio $180.00 |
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20kV 0.2µF High Voltage Polystyrene capacitor HAM audio $150.00 |
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1270 1% 63 VOLT PHILIPS POLYSTYRENE FILM CAPACITORS AXIAL $99.50 |
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30kV 0.1µF High Voltage Polystyrene capacitor HAM audio $130.00 |
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60kV 10nF High Voltage Polystyrene capacitor HAM audio $130.00 |
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50kV 20nF High Voltage Polystyrene capacitor HAM audio HV 20000pF film Marx $100.00 |
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40kV 50nF High Voltage Polystyrene capacitor HV HAM radio audio marx generator $90.00 |
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20kV 0.1µF High Voltage Polystyrene capacitor HAM audio $80.00 |
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K71-5 POLYSTYRENE Capacitor 0,033uF 160V 2% ,Lot of 396 $57.95 |
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250pcs PSE Polystyrene Film Capacitor 4700pF J 125V TSC $63.70 |
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565 1% 630 VOLT PHILIPS POLYSTYRENE FILM CAPACITORS AXIAL $49.50 |
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40kV 35nF High Voltage Polystyrene capacitor HAM audio HV film 35000pF $65.00 |
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0.0117uF 250V 1% polystyrene capacitors K71-7 Lot 250 $49.00 |
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1000pF 250V Hi-tol POLYSTYRENE CAPACITORS 378 pcs full box $39.00 |
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30kV 50nF High Voltage Polystyrene capacitor HV HAM radio audio marx generator $60.00 |
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20kV 50nF High Voltage Polystyrene capacitor HAM audio $60.00 |
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250 pcs PSR Polystyrene Film Capacitor 2700pF J 63V TSC $51.00 |
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10pcs 630v 8200pf Ultra Stable Polystyrene Capacitors $52.00 |
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10pcs 630v 9100pf Ultra Stable Polystyrene Capacitors $52.00 |
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25pcs 630v 1pf Ultra Stable Polystyrene Capacitors $48.00 |
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0.1uF 250V 5% HI-END POLYSTYRENE capacitors Lot of 80 $29.00 |
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25pc CRL 630v 130pf Ultra Stable Polystyrene capacitors $39.00 |
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K71-4B Polystyrene Capacitors 0,027uF 250V, Lot of 160 $39.00 |
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25pcs 630v 1000pf Ultra Stable Polystyrene Capacitors $42.00 |
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25pcs 630v 1200pf Ultra Stable Polystyrene Capacitors $42.00 |
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25pcs 630v 1500pf Ultra Stable Polystyrene Capacitors $42.00 |
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20kV 30nF High Voltage Polystyrene capacitor HAM audio $45.00 |
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80kV1000pF High Voltage Polystyrene capacitor HAM audio $45.00 |
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25pc CRL 630v 560pf Ultra Stable Polystyrene capacitors $37.00 |
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0.5uF 250V 0.5 % K71-7 Polystyrene capacitors Lot of 50 NOS $22.00 |
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100 CRL 500v 200pf Ultra Stable Polystyrene capacitors $35.00 |
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100 Diel 500v 1pf Ultra Stable Polystyrene capacitors $35.00 |
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25 CRL 630v 1600pf Ultra Stable Polystyrene capacitors $34.50 |
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0.032uF 250V 1% polystyrene capacitors K71-7 Lot of 120 NEW BOXED $29.00 |
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100 Mial 500v 390pf Ultra Stable Polystyrene capacitors $34.50 |
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25 CRL 630v 3000pf Ultra Stable Polystyrene capacitors $34.00 |
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100 Mial 500v 1500pf Ultra Stable Polystyrene capacitor $34.00 |
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25 CRL 630v 2400pf Ultra Stable Polystyrene capacitors $34.00 |
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25pc CRL 630v 270pf Ultra Stable Polystyrene capacitors $34.00 |
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25 CRL 630v 1300pf Ultra Stable Polystyrene capacitors $34.00 |
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25pcs CRL 630v 82pf Ultra Stable Polystyrene Capacitors $34.00 |
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100 CRL 500v 360pf Ultra Stable Polystyrene capacitors $34.00 |
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100 CRL 500v 430pf Ultra Stable Polystyrene capacitors $34.00 |
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SALE 0.5uF 250V polystyrene capacitors K71-7 Lot 50 $22.00 |
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25pcs 630v 110pf Ultra Stable Polystyrene Capacitors $37.00 |
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25pcs 630v 130pf Ultra Stable Polystyrene Capacitors $37.00 |
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25pcs 630v 200pf Ultra Stable Polystyrene Capacitors $37.00 |
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25pcs 630v 330pf Ultra Stable Polystyrene Capacitors $37.00 |
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25pcs 630v 360pf Ultra Stable Polystyrene Capacitors $37.00 |
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25pcs 630v 390pf Ultra Stable Polystyrene Capacitors $37.00 |
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25pcs 630v 430pf Ultra Stable Polystyrene Capacitors $37.00 |
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25pcs 630v 75pf Ultra Stable Polystyrene Capacitors $37.00 |
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25pcs 630v 100pf Ultra Stable Polystyrene Capacitors $37.00 |
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25pcs 630v 47pf Ultra Stable Polystyrene Capacitors $37.00 |
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25pcs 630v 62pf Ultra Stable Polystyrene Capacitors $37.00 |
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25pcs 630v 120pf Ultra Stable Polystyrene Capacitors $37.00 |
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30kV 20nF High Voltage Polystyrene capacitor HAM audio, 30000V 20000pF HV $40.00 |
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50kV 5nF High Voltage Polystyrene capacitor, 50000V 5000pF HV HAM audio $40.00 |
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40kV 25nF High Voltage Polystyrene capacitor HAM audio $40.00 |
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25 CRL 630v 4300pf Ultra Stable Polystyrene capacitors $32.50 |
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100 Mial 500v 330pf Ultra Stable Polystyrene capacitors $31.00 |
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50 CRL 500v 9100pf Ultra Stable Polystyrene capacitors $31.00 |
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0.1uF 250V K71-4 POLYSTYRENE capacitors Lot of 70 $24.00 |
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50pcs Mial 630v 390pf Polystyrene Capacitors New! $30.00 |
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40kV 10nF High Voltage Polystyrene capacitor HAM audio $38.00 |
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30kV 15nF High Voltage Polystyrene capacitor HAM audio, 30000V 15000pF HV $35.00 |
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2pcs JENSEN 0.0355uF 400V Polystyrene Styroflex Audio Capacitors NOS *rare* $35.00 |
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50kV 1nF High Voltage Polystyrene capacitor HAM audio $35.00 |
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40kV 8.2nF 8200pF High Voltage Polystyrene capacitor HAM HV Marx generator $35.00 |
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POLYSTYRENE CAPACITOR, 4700pF, 4.7nF 63V…Pack of 25 $21.22 |
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K71-5 0.047uF 160V 2% tol. POLYSTYRENE capacitors. Lot of 50pc. NEW! $19.99 |
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2pcs JENSEN 0.01uF 600V 1% Polystyrene Styroflex Audio Capacitors NOS *rare* $32.00 |
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6800 pF 250 V Polystyrene Capacitors. Box of 100. New $18.00 |
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POLYSTYRENE CAPACITOR, 1200pF, 1.2nF 63V…Pack of 25 $18.86 |
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5pcs 630v 10000pf Ultra Stable Polystyrene Capacitors $28.00 |
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Capacitor .1 mfd 200 vdc .1% Polystyrene Southern Electronics (5 pieces) $24.99 |
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Capacitor 1 mfd 50 vdc 1% EAI Polystyrene (6 pcs) $24.99 |
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CAPACITOR polystyrene 5760 pf 125 vdc 2% (20 pieces) $24.99 |
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30kV 10nF High Voltage Polystyrene capacitor HAM audio $30.00 |
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40kV 4.7nF High Voltage Polystyrene capacitor HAM audio $30.00 |
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K71-7 POLYSTYRENE Capacitor 0.0406uF 250V 0.5% ,100pcs $23.95 |
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1uF 250V K71-4 POLYSTYRENE capacitors Lot of 8 $16.50 |
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K71-7 POLYSTYRENE Capacitor 0.02uF 250V ,Lot of 53 $20.95 |
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POLYSTYRENE CAPACITOR, 56pF, 0.056nF 30V…Pack of 25 $14.14 |
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POLYSTYRENE CAPACITOR, 470pF, 0.47nF 63V…Pack of 25 $14.14 |
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GENERAL RADIO POLYSTYRENE DECADE CAPACITOR 1419A $6.28 |
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20kV 10nF High Voltage Polystyrene capacitor HAM audio $26.00 |
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30kV 8nF High Voltage Polystyrene capacitor HAM audio $25.00 |
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80kV 1000pF High Voltage Polystyrene capacitor HV HAM radio audio marx generator $24.99 |
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50kV 1nF High Voltage Polystyrene capacitor HAM audio $24.99 |
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K71-7 POLYSTYRENE Capacitor 0.1uF 250V 1% ,Lot of 50 $18.95 |
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0.5uF 250V 0.5 % K71-7 Polystyrene capacitors Lot of 20 NOS $12.00 |
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K71-7 POLYSTYRENE Capacitor 0.1uF 250V 0.5% ,Lot of 50 $17.95 |
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SIEMENS B33063 1540PF 2% 160V POLYSTYRENE CAPACITOR $18.00 |
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SIEMENS B33063 2260PF 2.5% 160V POLYSTYRENE CAPACITOR $19.90 |
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SIEMENS B33062 316PF 2.5% 630V POLYSTYRENE CAPACITOR $18.00 |
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30kV 6.8nF High Voltage Polystyrene capacitor HAM audio $23.00 |
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0.0303uF 250V 2% polystyrene capacitors K71-7 Lot 35 $12.00 |
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0.1uF 250V Hi-tol POLYSTYRENE CAPACITORS 50pcs $17.95 |
Polystyrene Capacitor Questions
The Development Trend Of Humidity Sensor
In the industrial and agricultural production, weather, environmental protection, national defense, scientific research, aerospace and other departments are often required to measure and control humidity. However, in conventional environmental parameters, the humidity is the most difficult to accurately measure a parameter. With the dry and wet bulb hygrometer or a hair hygrometer to measure humidity, the method has long been unable to meet the needs of the development of modern science and technology. This is because the measurement of humidity than the measurement of complex multi-temperature, the temperature is measured is an independent, while the humidity is affected by other factors (atmospheric pressure, temperature) effects.
In addition, the calibration of humidity is also a problem. Production abroad humidity calibration equipment prices are very expensive.
In recent years, the humidity sensor research and development at home and abroad have made great strides. Humidity sensor is moving from simple humidity sensor to the integrated, intelligent, multi-parameter detection of the direction of rapid development, in order to develop a new generation of humidity / temperature measurement and control system has created favorable conditions for humidity measurement techniques will also be raised to a new level.
The characteristics of humidity sensor
Humidity sensor is the simplest humidity sensor. Humidity sensor are mainly resistive, capacitive two broad categories.
a humidity sensitive resistor
Humidity resistance is characterized by the substrate covered by a layer of wet material with a sense of the film, when the air in the water vapor adsorbed on a sense of the wet membrane, the components of the resistivity and resistance values are changed to use this feature Humidity can be measured. Many different types of humidity resistance, such as metal oxide humidity resistance, humidity resistance of silicon, ceramic humidity resistance and so on. Humidity resistance has the advantage of high sensitivity, the main drawback is that linearity and interchangeability of products poor.
b Humidity Capacitance
Humidity capacitors are generally made with the polymer film capacitors, polymer materials commonly used in polystyrene, polyimide, cellulose acetate, etc. butyricum. When the ambient humidity changes, the capacitance of the dielectric constant humidity changes, so that it is also a change in capacitance, its capacitance is proportional to the change in relative humidity. The main advantage of capacitive humidity sensor with high sensitivity and product interchangeability is good, fast response, a small amount of moisture lag, easy to manufacture, easy to achieve miniaturization and integration, and its accuracy in general is lower than the humidity sensitive resistor. The main production abroad humidity capacitor manufacturers are Humirel company, Philips Company, Siemens Corporation. To Humirel produced SH1100-type humidity sensor capacitor, for example, the measurement range is (1% ~ 99%) RH, at 55% RH when the electrical capacity of 180pF (typical value). When the relative humidity from 0 to 100%, the changes in capacitance range is 163pF ~ 202pF. The temperature coefficient of 0.04pF / ℃, humidity hysteresis amount of ± 1.5%, response time of 5s.
In addition to resistive, capacitive humidity sensor, there are ionic-type humidity sensor, weight-type humidity sensor (with a sense of the changes in the weight of wet film to change the oscillation frequency), light intensity-type humidity sensor, SAW humidity sensor and so on.
Humidity sensor linearity and anti-pollution poor in the detection of ambient humidity, the humidity sensor to a long-term exposure to the environment under test, it is easily affected by pollution, measurement accuracy and long-term stability.
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