THE "ELECTRICITY 3" DEMONSTRATION SET

1. Purpose

1.1 The "Electricity 3" set is intended for basic law demonstrations investigated on the "Alternating electric current" theme in a course of physics at a secondary school, and for acquaintance of pupils with condenser, inductance and with holdover processes.

1.2 The set is applied to demonstrate experiments in standard physics classroom conditions at a secondary school, a technical training college or a technical school.

2. Delivery set

4.7 mf condenser - 1 pc.
18.8 mf condenser - 1 pc.
4700 mf condenser - 1 pc.
2200 mf condenser - 1 pc.
Choke coil - 1 pc.
Ferrite core - 1 pc.
Coil connection module - 1 pc.
Hammer coil - 2 pcs.
Switch - 1 pc.
Methodical manual - 1 pc.
Set certificate - 1 pc.
Packing box - 1 pc.

3. General instructions

Set details provide an opportunity to assembly an electric circuit at a vertical plane.

The set with the help of molded magnets in the bases demountable modules by the size 110х110 mm can be mounted at a metal blackboard or at a screen surface made from the static material. Electric circuit elements are installed on each of these modules.

Module plugs for connecting wires are disposed and legends of elements are put at a module face.

Wires with Ж4 mm round unipolar tip or with a flat plug can be used as connecting wires.

Moving a variable resistor toddler or a key blade, a module must be held from travel on a board surface by a free hand.

It is necessary to avoid usage of force and fall of ferrite core.

4. Technical data

Module size for circuit element installation - 110 х 110 mm

Fastening type - Magnetic

Inductance of a core choke coil - 0.25 Gn

Service life - ≥ 7 years

5. Demonstration experiment list

· Series-tuned circuit resonance
· Inductance coil in an alternating current circuit
· Condenser charging
· Condenser discharging
· Charged condenser energy
· Electromagnetic induction
· Principle of transformer operation
· Condenser in an alternating current circuit
· Self-induction phenomenon
· Resonant frequency and contour parameters dependence
· Alternating-current circuit

6. Possible malfunctions and their elimination

There is no contact in a wire connection place

Increase a tip gap of the pin with the help of the 4х0,25 mm plane screw-driver.

Test plug fastening on the board element. Tight a fixing nut with the help of the #7 face key if necessary.

Lamp does not work

Replace the lamp: slightly press into patron, turn it counter-clockwise and take out from the patron. Lamp installation goes in the reverse order.

7. The equipment necessary for operation with the set:

· current and voltage digital instruments package
· the "Electricity 1" demonstration set
· the "Electricity 2" demonstration set
· connecting wire demonstration package
· DC source up to 6А with the 2-15V adjustable voltage
· 8-Ohm sine-wave generator