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National Repository of Grey Literature 4 records found  Search took 0.00 seconds. 
Study of dielectric relaxation in PCB substrates and cable insulation
 Ježík, Jan ; Brzobohatý, Jaromír (referee) ; Běťák, Petr (advisor)
This study investigates relaxation polarization in some dielectric components of tester UNISPOT S40 developed by company UNITES Systems a.s. Relaxation polarization in the PCB substrates and in tester’s cable insulation causes undesirable deceleration of some test steps. Relaxation polarization in selected PCB substrates and various cables are examined by method of dielectric relaxation spectroscopy in the frequency domain and by measurement of polarization or depolarization current.
Detailed record
Study of the factors that influence setting time during current measurement.
 Ježík, Jan ; Macháň, Ladislav (referee) ; Běťák, Petr (advisor)
This study is engaged in the effect of dielectric relaxation on very small direct current setting time after applying voltage of 600 V. Several relaxation phenomenons in dielectric materials stressed by electric field are discussed. Characteristics of three substrates of PCBs are evaluated by using time and frequency domain dielectric relaxation spectroscopy in order to find an optimal material for high speed tester UNISPOT S40 ACCEL construction.
Detailed record
Study of the factors that influence setting time during current measurement.
 Ježík, Jan ; Macháň, Ladislav (referee) ; Běťák, Petr (advisor)
This study is engaged in the effect of dielectric relaxation on very small direct current setting time after applying voltage of 600 V. Several relaxation phenomenons in dielectric materials stressed by electric field are discussed. Characteristics of three substrates of PCBs are evaluated by using time and frequency domain dielectric relaxation spectroscopy in order to find an optimal material for high speed tester UNISPOT S40 ACCEL construction.
Detailed record
Study of dielectric relaxation in PCB substrates and cable insulation
 Ježík, Jan ; Brzobohatý, Jaromír (referee) ; Běťák, Petr (advisor)
This study investigates relaxation polarization in some dielectric components of tester UNISPOT S40 developed by company UNITES Systems a.s. Relaxation polarization in the PCB substrates and in tester’s cable insulation causes undesirable deceleration of some test steps. Relaxation polarization in selected PCB substrates and various cables are examined by method of dielectric relaxation spectroscopy in the frequency domain and by measurement of polarization or depolarization current.
Detailed record

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