Turns Ratio sine wave 100kHz, 20mV, connected primary winding. induced
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Pulse Transformer Technical Guide
Turns Ratio sine wave 100kHz, 20mV, connected primary winding. induced voltage other windings measured. ratio primary induced voltage determine turns ratio.
Impedance Analyzer fosc 100kHz Vosc 20mV
2-5) 1100kHz20mV
truns ratio
ET/Constant This term indicates saturation characteristic toroidal core generally used transformer. T=(Bs-Br) (s,V)
(Gauss)
2-6)ET ET(Bs-Br)NS10-2(s.V)
(Oe)
Remarks: Bs-Br :Max.magnetic flux density-Residual magnetic flux density (Gauss) :Number winding turns :Core sectional area (cm2) :Voltage core :Pulsewidth applied voltage (µs) Constant value primary side generally defined product T(time) applied voltage applied pulse down applied voltage.
Bs-Br (Gauss) (cm2) (µs)
(T)(E)
Secondary open
Winding being measured Input pulse signal
0.1E
Common mode noise rejection rate(CMRR) pulse transformer with primary secondary windings isolated small interwinding capacitance, Cww, most favorable factors reduction common mode noise. Thus when designing pattern layout, consideration must given separation lead connections. effect determined ratio secondary output voltage applied primary voltage,
Test Circuit (example)
2-7)CMRR 1E12
CMRR Transformer being measured
(dB)
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