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Electricity
Resistance Box, Plug Pattern
All plugs are turned to a fine standard taper and are interchangeable. These are moulded in fluted plastic tops. The brass blocks are undercut and are fitted to a thick insulating plate. Heavy 4 mm brass terminals are used. Coils are non-inductively wound and are treated to be strain-free. Coil values are engraved on the plate and an infinity plug is also included. Accuracy ±0.5% for 0.01 to 0.05 ohm coils, ±1% for the rest.
PH50560 -
Electricity
Decade Resistance Box
Consists of six rotary switches in decade sequence mounted on a plastic box with each value clearly marked. The total resistance value can vary from 0 to 1,111,110 x 1 Ω. Accuracy is within ±0.5%. Two universal binding posts are provided for easy connections.
PH50562 -
Electricity
Resistance Substitution Box
This unit includes a set of 2 W resistors of different values. These resistors can be connected by means of 4 mm sockets and arranged in series to give the full range from 1 to 12,221. A clear connection diagram on the main panel makes the unit easy to use.
PH50572 -
Electricity
Post Office Box, Plug Type
Plug type, with three pairs of ratio coils of 10,100 and 1000 ohms and 16 series coils from 1 to 5000 ohms, total 11,110 ohms, giving a range from 0.01 ohm to 1,111,000 ohms. Two tapping keys are provided for battery and galvanometer. Accuracy ratio coils ±0.05%, others ±0.1%.
PH50580 -
Electricity
Post Office Box, Wheatstone Bridge
With two ratio dials of 10,100 and 1000 ohms each and a resistance arm of four dials, each of ten coils of 1, 10, 100 and 1000 ohms, giving total resistance of 11,110 ohms, with 4 mm socket terminals for battery, galvanometer and unknown resistance. Highly stable resistances are used. Accuracy ±0.1%.
PH50585 -
Electricity
Decade Inductance Box – 3 Dial
Housed in a box with three dials and fitted with 4 mm output plugs, the unit allows a range of inductances from 1 mH to 1110 mH.
3 Decade Inductance Box:- 1 mH to 10 mH in steps of 1 mH.
- 10 mH to 100 mH in steps of 10 mH.
- 100 mH to 1000 mH in steps of 100 mH.
PH50586C -
Electricity
Decade Inductance Box – 7 Dial
Housed in a box with seven dials and fitted with 4 mm output plugs, the unit allows a range of inductances from 1 μH to 11111110 μH.
7 Decade Inductance Box:- 1 μH to 10 μH in steps of 1 μH.
- 10 μH to 100 μH in steps of 10 μH
- 100 μH to 1 mH in steps of 100 μH.
- 1 mH to 10 mH in steps of 1 mH.
- 10 mH to 100 mH in steps of 10 mH.
- 100 mH to 1 H in steps of 100 mH.
- 1 H to 10 H in steps of 1 H.
PH50586G -
Electricity
Three Step Inductor
This three-step inductor consists of a coil of enamelled copper wire wound over an insulated spool. The coil consists of 4 layers of 200 turns each. The tappings at 200, 400 and 800 turns are brought out at 4mm sockets. The output inductances at these tappings are as follows.
- No. of turns Inductor Resistance 200 0.3mH 0.6Ohm.
- 400 1.2mH 1.2 Ohm.
- 800 5mH 2.6Ohm.
- One can easily change the inductor value of the instrument on just inserting a soft iron core inside the bobbin.
PH50586S -
Electricity
Variable Inductor
The enameled wire winding and a cylindrical soft iron core are built into this unit. The iron core displacement inside the winding can manually adjusted by the knob to give precise measurements up to 1.3 H. Connections are made through 4mm sockets.
Specifications:- Resistivity: 0.0165 W/m.
- Self-induction coefficient: 0.15 to 1.3 H.
- Voltage: 30V A/C or 60V D/C.
PH50586VI -
Electricity
Capacitor Investigation Board
Capacitor Investigation Board is an excellent kit used for study of the charging and discharging of the capacitors. A toggle switch is used to change the charging and discharging mode of capacitor, external + 12V DC 2Amp supply is used for charging the capacitors through the current limiting resistors. The charging of the capacitor can be viewed on CRO. Once the capacitor is fully charged, it can be discharged by turning the toggle switch towards discharge. The discharging of the capacitor can also be viewed on CRO. These experiments can also be performed using the ammeter and voltmeter. Three different combinations of C&R are provided for observing different waveforms.
PH50587 -
Electricity
Capacitance Substitution Box
With rotary switch and a pair of 4 mm socket terminals. Contains twelve standard preferred value non-polarized capacitors from 100 pF to 0.47 μF. Tolerance ±2%. Values are 100 pF, 220 pF, 470 pF, 1 nF, 2.2 nF, 4.7 nF, 10 nF, 22 nF, 47 nF, 0.1 μF, 0.22 μF and 0.47 μF.
PH50601 -
Electricity
Motor with Solar Cell
A solar cell and solar motor mounted on metal base. Solar cell unit comprises a 30 x 70 mm selenium photo-voltaic cell Low-power motor is designed specifically to run from solar cells Demonstrates conversion of solar energy to electrical energy, then to mechanical energy.
PH50605
+1 (630) 345-3450