Voltage sensor -12..12 V (differential)

The Differential Voltage sensor BT31i is designed for exploring the basic principles of electricity. With a wide input voltage range of -12 to 12 V this sensor can be used to measure voltages in AC and DC circuits. The sensor has differential inputs, which means that measurements can be done directly across circuit elements without the constraints of common grounding. It can be used to measure positive potentials, as well as negative potentials. It has two banana (4-mm) plugs for easy connection.

The sensor is provided with over-voltage protection and voltages up to ± 50V (related to ground) will not damage the sensor. It never can be used for higher voltages or 220V. The sensor is excellent to sample AC-signals at relative high frequencies (< 100 kHz).

The Differential Voltage sensor can be used in various experiments such as:
• charging and discharging capacitors,
• characteristics of a light bulb and a diode,
• measurements of internal resonance and EMF,
• measurements in series and parallel electrical circuits.
Together with a Current Sensor it can be used to explore the relationship between the current and the voltage in electrical circuits - the Ohm’s Law.

The Voltage sensor can be directly connected to analog BT inputs of the CMA interfaces.
Attention: The sensor cable BT - IEEE1394 needed to connect the sensor to an interface is not supplied with the sensor and has to be purchased separately (CMA Art. Nr BTsc_1).

Technical specifications of the sensor are described in its User's guide.