Objective:
– To demonstrate the effects of changing the ‘turns ratio’ between primary and secondary windings of a transformer.
Apparatus:
- OHP voltmeter, AC
- Model transformer (EM12)
- 400 winding inductor
- 1600 winding inductor
- Power supply (S4-C)
Method:
Assemble all components on the OHP, except the power supply. Apply about 4 V AC and measure primary and secondary voltages with the OHP meter. Proceed as in DEM49A, method I, then reverse the primary/secondary connections and re-measure the voltages.