Verification of Child's Law with power supply and 2 meters (1 Multi range) (C.R.) (V.V.) Manufacturer,Supplier and Exporter in India
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Product Code : SCL-EELE-12171
Indian Lab Suppliers supplies the Verification of Child's Law with power supply and 2 meters (1 Multi range) (C.R.) (V.V.) (Product ID: 12171) as part of its electronics engineering lab equipment range. It is a self-contained vacuum-diode set-up for verifying Child's law of space-charge-limited current.
Quick Answer
A diode valve is wired in on the panel with a continuously variable 0–300 V DC, 100 mA regulated plate supply. A 65 mm multi-range DC meter reads 30 V and 300 V and 0–100 mA through a rotary switch, and a 65 mm 0–1 A AC/DC ammeter with a high-wattage wire-wound potentiometer sets and reads the filament current. In the space-charge region plate current follows Ip = K·Vp3/2, so a log-log plot of Ip against Vp should give a slope of 1.5. The filament supply rating is not stated; please confirm at quotation.
Key Specifications
| Parameter | Detail |
|---|---|
| Device | Diode valve, panel mounted |
| Plate supply | 0–300 V DC, 100 mA, continuously variable, regulated |
| Multi-range meter | DC, 65 mm, 30 V / 300 V and 0–100 mA, rotary switch |
| Filament meter | AC/DC ammeter, 65 mm, 0–1 A |
| Filament control | High-wattage wire-wound potentiometer |
| Mains input | 230 V ±10%, 50 Hz AC, with mains switch, fuse and pilot lamp |
Where This Is Used
A variant of the Diode Characteristics with power supply and 2 meters (Product ID: 12161), used in physics and electronics labs. The 300 V plate supply can give a dangerous shock and the valve gets hot; use under supervision. Browse the full Electronics Engineering Lab Equipment range or related Physics Lab Equipment products.
Frequently Asked Questions
What does Child's law state?
Space-charge-limited plate current is proportional to plate voltage to the power 3/2.
How is the law checked?
A log-log graph of plate current against plate voltage should have slope 1.5.
Is other apparatus needed?
No, the supply and meters are built in.
Related Categories
Electronics Engineering Lab Equipment · Physics Lab Equipment · Electronics Lab Equipment
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