and
ASR Programmer
Transformer Test Bench
Transformer
Efficiency Calculator was developed using Microsoft Visual Basic 6.0 (VB6)
and runs on any Windows PC platform.
TRANSFORMER EFFICIENCY CALCULATOR was designed specifically to communicate with the TEKTRONIX TPS 2024B Oscilloscope. To measure electric current in and out of the transformer, two TEKTRONIX A622 AC/DC Current Probes are used. TRANSFORMER EFFICIENCY CALCULATOR is available for free simply by hitting the download button below. I recommend using COMFORT CLIPBOARD PRO to view the captured data screens for easy viewing. Driver file ftd2xx.dll must be located in the Windows\System32.
Transformer Efficiency Calculator performs the following calculations:
To compute the Apparent Input
Power (VA):
ApparentInputPower = InputVoltage * InputCurrent
To compute the Phase Real Input
Power (Watts):
RealInputPower = InputVoltage * InputCurrent * Cos(PHI)
To compute the Phase Reactive
Input Power (VAR):
ReactiveInputPower = InputVoltage * InputCurrent * Sin(PHI)
To compute the Input Phase Angle
(Degrees):
PHI = Arccos(RealInputPower / (InputVoltage * InputCurrent))
To compute the Inverse Cosine, Arccos(X):
Arccos(X) = Atn(-X / Sqr(-X * X + 1)) + 2 * Atn(1)
To compute the Apparent Output
Power (VA):
ApparentOutputPower = OutputVoltage * OutputCurrent
To compute the Phase Real Output
Power (Watts):
RealOutputPower = OutputVoltage * OutputCurrent * Cos(PHI2)
To compute the Phase Reactive
Output Power (VAR):
ReactiveOutputPower = OutputVoltage * OutputCurrent * Sin(PHI)
To compute the Output Phase Angle (Degrees):
PHI2 = Arccos(RealOutputPower / (OutputVoltage * OutputCurrent))
To compute the Inverse Cosine, Arccos(X):
Arccos(X) = Atn(-X / Sqr(-X * X + 1)) + 2 * Atn(1)
To compute the Load Resistor Real
Output Power (Watts):
ResistorRealOutputPower = (OutputVoltage)2 / LoadResistor
To compute the Apparent Power
Multiplier (Unitless):
ApparentPowerMultiplier = ApparentOutputPower / ApparentInputPower
To compute the Apparent Power
Multiplier Efficiency (%):
ApparentPowerMultiplierEfficiency = (ApparentOutputPower / ApparentInputPower) * 100
To compute the Phase Transformer
Efficiency, (%):
PhaseEfficiency = (RealOutputPower / RealInputPower) * 100
To compute the Load Resistor
Transformer Efficiency (%):
LoadResistorEfficiency = (ResistorRealOutputPower / RealInputPower) * 100
ASR PROGRAMMER is a USB Windows app that makes the GW-INSTEK ASR-2100 fully programmable by setting up AC test voltages for the transformer.