Objective: Make measurements on a transformer with and without load
Transformers are devices based on Faraday’s law of induction which are used for converting voltages. One major use is for the transmission of electrical power over large distances, whereby power losses can be minimised by converting the voltage up to the highest possible levels thus reducing the current to a minimum. This experiment investigates the way the voltage and current depend on the number of windings with and without a load and with the output short-circuited. You will also calculate the power losses and efficiency.
![Experiment: Transformers (230 V, 50/60 Hz), 8000633 [UE3040500-230], Induction](/imagelibrary/UE3040500-230/UE3040500-230_01_Experiment-Transformers-230-V-5060-Hz.jpg)
![Experiment: Transformers (230 V, 50/60 Hz), 8000633 [UE3040500-230], Induction](/thumblibrary/UE3040500-230/UE3040500-230_01_1200_1200_Experiment-Transformers-230-V-5060-Hz.jpg)
![Set of 15 Safety Experiment Leads, 75 cm, 1002843 [U138021], Circuits](/thumblibrary/U138021/U138021_01_140_140_Set-of-15-Safety-Experiment-Leads-75-cm.jpg)
![Coil D with 1200 Turns, 1000989 [U8497440], Demountable Transformer D](/thumblibrary/U8497440/U8497440_01_140_140_Coil-D-with-1200-Turns.jpg)
![Digital Multimeter P3340, 1002785 [U118091], Hand-held Digital Measuring Instruments](/thumblibrary/U118091/U118091_01_140_140_Digital-Multimeter-P3340.jpg)
![DC Power Supply 20 V, 5 A (230 V, 50/60 Hz), 1003312 [U33020-230], Power Supplies](/thumblibrary/U33020-230/U33020-230_01_140_140_DC-Power-Supply-20-V-5-A-230-V-5060-Hz.jpg)
![Universal Clamp, 1002830 [U13255], Clamps](/thumblibrary/U13255/U13255_01_140_140_Universal-Clamp.jpg)
![Barrel Foot, 1 kg, 1002834 [U13265], Bases](/thumblibrary/U13265/U13265_01_140_140_Barrel-Foot-1-kg.jpg)
![Tripod Stand 150 mm, 1002835 [U13270], Bases](/thumblibrary/U13270/U13270_01_140_140_Tripod-Stand-150-mm.jpg)
![Coil D with 600 Turns, 1000988 [U8497430], Demountable Transformer D](/thumblibrary/U8497430/U8497430_01_140_140_Coil-D-with-600-Turns.jpg)
![Transformer with Rectifier 2/4/6/8/10/12/14 V, 5 A (230 V, 50/60 Hz), 1003558 [U8521112-230], Power Supplies](/thumblibrary/U8521112-230/U8521112-230_01_140_140_Transformer-with-Rectifier-2468101214-V-5-A-230-V-5060-Hz.jpg)
![Tubing, Silicone 6 mm, 1002622 [U10146], Tubing](/thumblibrary/U10146/U10146_01_140_140_Tubing-Silicone-6-mm.jpg)
![Pair of Safety Experiment Leads, 75 cm, 1002849 [U13812], Experiment Leads and Cables](/thumblibrary/U13812/U13812_01_140_140_Pair-of-Safety-Experiment-Leads-75-cm.jpg)
![Stainless Steel Rod 750 mm, 1002935 [U15003], Stand Material: Stainless Steel Rod](/thumblibrary/U15003/U15003_01_140_140_Stainless-Steel-Rod-750-mm.jpg)
![Linear Resistor, 10 Ohm, 1012904 [U333012], Plug-In Component System](/thumblibrary/U333012/U333012_01_140_140_Linear-Resistor-10-Ohm.jpg)
![Capacitor 1 µF, 1012955 [U333063], Plug-In Component System](/thumblibrary/U333063/U333063_01_140_140_Capacitor-1-µF.jpg)
![Plate Capacitor D, 1006798 [U8492355], Electrostatics](/thumblibrary/U8492355/U8492355_01_140_140_Plate-Capacitor-D.jpg)
![Pair of Clamps D, 1000977 [U8497181], Demountable Transformer D](/thumblibrary/U8497181/U8497181_01_140_140_Pair-of-Clamps-D.jpg)
![Pair of Pole Shoes D, 1000978 [U8497200], Demountable Transformer D](/thumblibrary/U8497200/U8497200_01_140_140_Pair-of-Pole-Shoes-D.jpg)
![Waltenhofen’s Pendulum, 1000993 [U8497500], Induction](/thumblibrary/U8497500/U8497500_01_140_140_Waltenhofen-s-Pendulum.jpg)
![Experiment: Charging and Discharging a Capacitor (230 V, 50/60 Hz), 8000635 [UE3050101-230], Direct and alternating current (DC and AC)](/thumblibrary/UE3050101-230/UE3050101-230_01_140_140_Experiment-Charging-and-Discharging-a-Capacitor-230-V-5060-Hz.jpg)