AC Circuits

RC Time Constant

[L | t+ | ★★★]
Charging and discharging of a 10µF capacitor with variable time constant.
[In-Depth Description]

RL Time Constant

[L | t+ | ★★★]
Pre-assembled circuit board; displays RL time constant on CRO.
[In-Depth Description]

LC Piano

[L | t | —]
An "electric" piano; tunes are played by changing L.
[In-Depth Description]

OHP RLC Circuit

[S | t | ★★]
KiloHenries and microFarads allow one to see the current slosh back and forth in this circuit.
[In-Depth Description]

Driven RLC Circuit

[M | t+ | ★★★]
Response of the elements of a series RLC circuit as a function of frequency is observed on a digital oscilloscope.
[In-Depth Description]

RLC Tunable Circuit

[M | t | —]
Energized by 60 Hz line voltage, this circuit can be tuned with a movable iron core in the inductor; the R is a light bulb.

RLC Bridge Circuit

[M | t+ | —]
An LC bridge circuit with light bulbs providing the R's; the bridge is balanced visually as indicated by light bulb brightness.

Induction Balance

[M | t+ | ★★]
Oppositely wound coils produce oppositely induced currents making for a sensitive metal detector

Audio Filters

[S | t | ★★★]
Simple RL and RC circuits serve as high-pass and low-pass audio frequency filters
[In-Depth Description]

AC/DC Power

[M | t++ | —]
When a DC voltage is equal to the rms value of a sinusoidal voltage, the powers supplied to separate light bulbs are equal.

Tesla Coil

[M | t | —]
Extremely high voltages are generated by the application of a resonant circuit and tuned antenna.

Dust Particle Paul Trap

[S | t+ | —]
An electrically charged dust particle is trapped in a time-varying (60 Hz) quadrupole electric field.

Contact Us

Mailing Address: Lecture Demonstration Services, Science Center, Rm B-08A, 1 Oxford Street, Cambridge, MA 02138
Campus Location: Science Center B-08A | Tel: (617) 495-5824 | Email: