Constant-Current Capacitor Charging Apparatus with Power Supply Included
$102.00(Ex GST)
- Calculates capacitance in µF using constant-current charging and first-principles measurements.
- Very small charging current is set then held constant throughout the charge period for clean analysis.
- Capacitor voltage monitored with high-impedance DVM, 10 MΩ input resistance specified.
- Student uses stopwatch timing, linking current, time, and voltage to determine capacitance value.
- Compact 9 V battery supply, typical currents under 1 mA, supports long battery life in class use.
- Description
- Datasheets & Manuals
Description
The IEC charge on capacitor apparatus is designed to calculate capacitor value in microfarads (µF) using measurements and first principles. A very small charging current is set and then held constant during charging, allowing the relationship between charge, current, time, and voltage to be explored through direct observation.
During the experiment, capacitor voltage is monitored using a high-impedance digital voltmeter (10 MΩ) while the student measures time with a stopwatch. The unit uses a compact 9 V battery power source, making it convenient for bench use. Currents are normally less than 1 mA, supporting long battery life under typical classroom operation.
FAQs
Q: What is this apparatus used to determine?
A: The capacitance value in microfarads (µF) using measurements and first principles.
Q: How is the capacitor charged in this setup?
A: With a very small charging current that is adjusted and held constant during charging.
Q: How is voltage measured?
A: Using a high-impedance digital voltmeter rated at 10 MΩ.
Q: How is time measured?
A: The student measures charging time using a stopwatch.
Q: What power source is used?
A: A compact 9 V battery.
Q: What typical current level is used?
A: Normally less than 1 mA.
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