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Code Number: 5L30.12
Demo Title: Half-Wave, Full-Wave Rectifiers
Condition: Excellent
Principle: AC/DC Waveforms
Area of Study: Electricity & Magnetism
Equipment:
Half-Wave Rectifier Unit, Full-Wave Rectifier Unit, Variac, Oscilloscope, Special probes with banana plug ends.
Procedure:
Half-Wave Rectifier: Plug the Variac into the Variac input on the demo board. Channel 1 of the oscilloscope is plugged into the reference trace sockets. Channel 2 is then plugged into the sockets that measure across the diode. Turn up the Variac and observe a half-wave rectification.
NOTE: If desired channel 2 may be inverted by turning on the appropriate switch on the oscilloscope.
Full-Wave Rectifier: Plug the Variac into the Variac input on the demo board. Channel 1 of the oscilloscope is plugged into the reference trace sockets. Channel 2 is plugged into the sockets that measure across the 2 diode rectifier. Turn up the Variac and observe the full-wave rectification.
NOTE: These diodes have been carefully chosen because they give a very clean and accurate trace. Spares have been provided. DON'T LOSE THEM.
References:
- Dan Lottis and Herbert Jarger, "LED's in Physics Demos: A Handful of Examples", TPT, Vol. 34, # 3, Mar. 1996, p. 144.
- A. D. Bulman, "On Rectifiers", Model-Making for Physics, p. 158.
- H. Richard Crane, "Light Dimmer", How Thing Work ( 1983 - 1995 ), p. 1.
- Keithley Instruments, Fredrick William Hughes, "Electrical Engineering Experiment # 1: Silicon Controlled Rectifier (SCR)", Series II.
- W. Bolton, "Rectification", Book 4 - Electricity, Physics Experiments and Projects, 1968, p. 73-74.
- Forrest M. Mims III, "Half-Wave Rectifier, Dual Half-Wave Rectifier, Full-Wave Rectifier", Vol. IV - Electronic Formulas, Symbols & Circuits, p. 112.