Charge/Discharge Circuit

Product Code: EM-8678A


The Charge/Discharge Circuit offers a unique way to observe and measure the behavior of DC circuits including batteries, capacitors, light bulbs, and resistors. It also includes an open slot that allows a component to be inserted for further experimentation.

Works Like a Variable DC Power Supply

Charge the capacitor using batteries and then the capacitor will act as a variable DC power source as you discharge it through a resistor or light bulb. Students measure the voltage

and current as the capacitor discharges, and they can graph the relationship between voltage and current for various components.

What’s Included

  • 1x Farad Capacitor
  • 3x #14 Light Bulbs
  • 1x 10 Ω Resistor
  • 1x 33 Ω Resistor
  • 1x 100 Ω Resistor
  • 1x Battery Holders (uses AA or AAA; batteries not included)
  • 1x Double-Throw Knife Switch
  • 1x Instruction Manual


Small parts. Not for children under 3 years.

Software Required

This product requires PASCO software for data collection and analysis. We recommend the following option(s). For more information on which is right for your classroom, see our Software Comparison: SPARKvue vs. Capstone »

Recommended Accessories

Light Bulbs (#14, 25 Pack) EM-8627
Battery Charger and AA Batteries SE-3570

Supporting Documents

Charge/Discharge Circuit Manual  English  560.79 KB