Monday, July 17, 2006
Resistors retain precision at high voltages
The CGH/CMH Series of high-power resistors use IRC's proprietary thick film MetalGlaze resistive element to provide ideal stability, precision and high voltage characteristics.
Providing design engineers with a precision high voltage power resistor capable of measurement and control functions in high voltage power electronics applications, TT electronics IRC Wirewound and Film Technologies Division has developed a rugged thick film resistor with voltage ratings up to 20kV. Designated the CGH/CMH Series, the resistors use IRC's proprietary thick film MetalGlaze resistive element which provides ideal stability, precision and high voltage characteristics for a wide range of high power applications. According to David Winkler, Product Manager at IRC's Wirewound and Film Technologies Division, the CGH Series resistors are ideal for use in voltage divider circuits in high voltage power supplies.
'The resistors exhibit a low VCR (voltage coefficient of resistance), giving them excellent stability to provide accurate voltage measurements', said Winkler.
'And precision can be further enhanced by ordering the resistors as matched pairs to provide divider accuracy down to +/-0.1%'.
The CGH Series can also be used as a high voltage bleeder resistor to safely discharge voltage in a power supply.
Additional applications for the CGH Series high voltage resistors include: medical and laboratory applications, such X-ray machines, CAT scans and particle detectors and accelerators; military devices, such as radar power supply and night vision image intensifiers; digital transmission in broadcasting; and industrial applications, including laser controllers, vacuum processing, and electron-beam welding, evaporation and deposition.
The CGH Series resistors have power ratings from 250mW to 5W, and are available in resistance values ranging from 100kohm to 2000Mohm at tolerances down to +/-0.5%; with TCRs down to +/-50ppm/C.
Voltage rating ranges from 750V to 20kV.
IRC will also produce devices outside these specifications to meet customer requirements.
The high reliability version, designated the CMH Series, is military approved to MIL-R-49462 (type RHV) for all values from 0.25 to 5W.
The CGH Series resistors are constructed by applying IRC's proprietary MetalGlaze thick film resistive material to a high alumina ceramic core and fired at 1000C, giving the resistor its inherent ruggedness under extreme environmental conditions.
After precision laser trimming, the resistors are epoxy-encapsulated.
Typical pricing for the CGH Series resistors ranges from $1.25 to $4.00, depending on wattage, in quantities of 10,000.
Providing design engineers with a precision high voltage power resistor capable of measurement and control functions in high voltage power electronics applications, TT electronics IRC Wirewound and Film Technologies Division has developed a rugged thick film resistor with voltage ratings up to 20kV. Designated the CGH/CMH Series, the resistors use IRC's proprietary thick film MetalGlaze resistive element which provides ideal stability, precision and high voltage characteristics for a wide range of high power applications. According to David Winkler, Product Manager at IRC's Wirewound and Film Technologies Division, the CGH Series resistors are ideal for use in voltage divider circuits in high voltage power supplies.
'The resistors exhibit a low VCR (voltage coefficient of resistance), giving them excellent stability to provide accurate voltage measurements', said Winkler.
'And precision can be further enhanced by ordering the resistors as matched pairs to provide divider accuracy down to +/-0.1%'.
The CGH Series can also be used as a high voltage bleeder resistor to safely discharge voltage in a power supply.
Additional applications for the CGH Series high voltage resistors include: medical and laboratory applications, such X-ray machines, CAT scans and particle detectors and accelerators; military devices, such as radar power supply and night vision image intensifiers; digital transmission in broadcasting; and industrial applications, including laser controllers, vacuum processing, and electron-beam welding, evaporation and deposition.
The CGH Series resistors have power ratings from 250mW to 5W, and are available in resistance values ranging from 100kohm to 2000Mohm at tolerances down to +/-0.5%; with TCRs down to +/-50ppm/C.
Voltage rating ranges from 750V to 20kV.
IRC will also produce devices outside these specifications to meet customer requirements.
The high reliability version, designated the CMH Series, is military approved to MIL-R-49462 (type RHV) for all values from 0.25 to 5W.
The CGH Series resistors are constructed by applying IRC's proprietary MetalGlaze thick film resistive material to a high alumina ceramic core and fired at 1000C, giving the resistor its inherent ruggedness under extreme environmental conditions.
After precision laser trimming, the resistors are epoxy-encapsulated.
Typical pricing for the CGH Series resistors ranges from $1.25 to $4.00, depending on wattage, in quantities of 10,000.
# posted by Swathi @ 3:40 AM 
