Glass Capacitor in High Voltage Circuits Experiment

Objective

This experiment aims to demonstrate the use of a glass capacitor in high voltage circuits, analyzing its performance under varying voltage conditions.

Required Components

Circuit Setup

In this experiment, we will set up a circuit that incorporates a glass capacitor in series with a resistor. The glass capacitor will be connected across a high voltage power supply, with an oscilloscope connected in parallel to measure the voltage across the capacitor.

The following steps will guide you in setting up the circuit:

  1. Connect the glass capacitor and resistor in series.
  2. Connect the series combination across the high voltage power supply.
  3. Use a multimeter to measure the voltage supplied to the circuit.
  4. Connect the oscilloscope across the glass capacitor to monitor the voltage across it.

Procedure

  1. Ensure the circuit is correctly connected and double-check all connections before powering on the high voltage supply.
  2. Gradually increase the power supply voltage and observe the voltage across the glass capacitor using the oscilloscope.
  3. Measure the voltage across the capacitor at different voltage levels (e.g., 100V, 200V, 300V).
  4. Observe the stability of the glass capacitor at high voltage levels. Glass capacitors are known for their low loss and high stability, making them ideal for high voltage applications.
  5. Record your observations and compare the voltage stability of the glass capacitor under different conditions.

Analysis

Glass capacitors are commonly used in high voltage applications because of their stability, low leakage, and excellent thermal performance. During this experiment, you should observe the capacitor's ability to handle high voltage without significant loss or degradation in performance.

Evaluate the data obtained from the oscilloscope and multimeter measurements. Does the capacitor maintain consistent performance across different voltage levels? How does it compare to other types of capacitors, such as ceramic or electrolytic capacitors?

Conclusion

This experiment highlights the glass capacitor's suitability for high voltage circuits. Due to their high stability and low loss characteristics, glass capacitors are a reliable choice in high voltage applications, such as power supplies and radio transmitters.