User's Manual

Charge/Discharge Circuit Equipment Setup

To Connect an External Power Supply to the Charge/Discharge Circuit

• Connect the cord from the positive terminal on the power supply to the positive “Power(+)” connector on the

circuit board.

• Connect the cord from the negative terminal on the power supply to the negative “Power(-)” connector on

the circuit board.

CAUTION: When using an external power supply, do not exceed a voltage of 3 volts for the bulbs or 5 volts for

the capacitor.

Also, always connect the positive lead from an external power supply to a positive (+) connector and the negative

cord to a designated negative (-) connector on the circuit board. Reversing positive and negative cord connec-

tions from an external power source may permanently damage the capacitor.

To Connect a PS-2115 PASPORT Voltage-Current Sensor to the Charge/Discharge Circuit

• To measure voltage: Plug the positive (+ red) voltage lead from the sensor into a positive connector on the

circuit board. Plug the negative (- black) voltage lead into a negative connector on the circuit board. (Note:

The connection of the leads from the sensor must be in parallel with a component of the circuit.)

• To measure current: Plug banana plug patch cords into the positive (+) and negative (-) banana plug ports on

the Voltage-Current Sensor. Connect the Voltage-Current Sensor in series with the Charge/Discharge Cir-

cuit. For example, plug the patch cord from the positive banana plug port on the sensor into the “Power (+)”

connector on the Charge/Discharge Circuit board. Plug the other patch cord from the sensor into the positive

connector for the capacitor.

To Connect Other Devices to the Charge/Discharge Circuit

Two empty slot springs are available for adding (or testing) other types of components with the circuit board.

Suggested Applications

• Demonstrating Ohm’s Law, the relationship of current to voltage and resistance in a direct current circuit.

• Comparing the voltage-current curve for an ohmic resistor to the voltage-current curve for a light bulb

(which may be nonlinear).

• Measuring the charge-discharge of the capacitor.

• Comparing battery discharge rates for different types of rechargeable batteries (not included).

WA R N I N G : To avoid shock, never place water or a wet hand in the path of the circuit. Always con-

nect an external power supply to a properly grounded electrical outlet. Do not get the board or any

of its components wet. Do not place the board near water. Follow standard electrical safety precau-

tions, and treat the Charge/Discharge Circuit like any other conductor.