Comprising 1 welding coil of 5 turns on former with insulated handle and short-circuiting pins,1 annular melting trough with insulated handle to show heating by induction,1 jumping ring which is thrown clear when primary current is started and a floating ring which remains freely suspended when primary current is flowing.

 

 Plastic body or Fitted on base, with sockets
 

A cycle dynamo , with crank handle, is fitted on base with two output terminals which are connected in parallel to a lamp holder with a lamp.
 

Single dial, compact size, housed in metal box with dial and knob. Connections through 4mm socket terminals. Accuracy ± 2 %.Maximum voltage 250 volts d.c. 10 nF to 100 nF in steps of 10 nF

With rotary switch and a pair of 4 mm socket terminals. contains twelve standard preferred value non-polarised capacitors from 100 pF to 0.47 μF. Tolerance ±2%. Values are 100 pF, 220 pF, 470 pF, 1nF, 2.2 nF, 4.7 nF, 10 nF, 22 nF, 47 nF, 0.1 μF, 0.22 μF and 0.47 μF.
 

Centre tapped, to fit ‘C’ core, with three 4 mm socketed terminals
 

For use on double ‘C’ core, wound with 1,100 turns of 22 swg copper wire with a resistance of about 6 ohms and inductance of about 15 henries, size 100 x 60 x 55 mm approx.
 

Outer copper vessel 125 x 75 mm with perforated shelf and terminal, a porous pot 150 x 50 mm and a zinc rod 125 x 12 mm,with support and terminal.
 

Contains four capacitors of 1μF, 2μF, 2μF, and 5μF linked in parallel, each via an ON/OFF slide switch. Can be linked together to provide upto 10 μF in 1μF steps. External connections by 4mm socket terminals.
 

The motor cat no is mounted on a base with a driving wheel. Output is through 4 mm sockets and a low voltage bulb is also provided as a simple output indicator.
 

Mounted on panel, large size parts and visible wiring. Operates on 4-6 volts.

With one mains coil, 240 V, 50 Hz, 2400 turns and two interchangeable secondary coils 65 and 130 turns giving outputs of 6 and 12 V approximately at 2 A maximum.

As used in Westminster Electromagnetic Kit. Size 90 x 50 x 22 mm.
 

With driving wheel, to generate current, mounted on polished wood base with driving wheel in vertical position , a lamp holder and a lamp. Output d.c. current
 

With driving wheel, to generate current, mountedon polished wood base with driving wheel in vertical position , a lamp holder and a lamp. Output both d.c. and a.c. current