LOW VOLTAGE (12 V, AC/DC) Power supply, 1-12 V, AC/DC Stepwise adjustment of the voltage in steps of 1 V. The DC voltage is full wave rectified but neither smoothed nor stabilized. The power supply is overload protected by a thermal circuit breaker. Specifications: DC: Voltage: 1-12 V (un-filtered), adjustable in 1 V steps Current: Max. 6 A AC: Voltage: 1-12 V, adjustable in 1 V steps Current: Max. 6 A Power consumption: Dimensions: Weight: Item no. 361055 Max. 110 W 203 x 225 x 117 mm 3.5 kg Power supply, 0-12 V, 3 A, AC/DC The power supply delivers a stabilized DC voltage, adjustable continuously between 0 and 12 V. Moreover it delivers an AC voltage, selectable as 2, 4, 6, or 12 V. The AC voltage is not stabilized. Both outputs are overload protected. Specifications: DC: Voltage: Current: Ripple and noise: 0-12 V (stabilized), cont. adj. Max. 3 A Max. 100 mV AC: Voltage: Current: 2-4-6-12 V, stepwise Max. 3 A Power consumption: Max. 110 W Dimensions: 203 x 225 x 117 mm Weight: 3.2 kg Item no. 361600 Power supply with display, 0-12 V, 3 A, AC/DC The power supply delivers a stabilized DC voltage, adjustable continuously between 0 and 12 V. The output voltage is shown in a display. Moreover it delivers an AC voltage, selectable as 2, 4, 6, or 12 V. The AC voltage is not stabilized. Both outputs are overload protected. Specifications: DC: Voltage: Current: Ripple and noise: 0-12 V (stabilized), cont. adj. Max. 3 A Max. 100 mV AC: Voltage: Current: 2-4-6-12 V, stepwise Max. 3 A Power consumption: Max. 110 W Dimensions: 203 x 225 x 117 mm Weight: 3.2 kg Item no. 361700 Experiment: Oersted’s experiment (137110) We examine the magnetic field around a current-carrying conductor. The direction of the magnetic field in a given point is found with a small compass. The direction of the field is the direction in which the north pole of the compass is pointing. The wire effectively constitutes a short circuit. If you wish to conduct this experiment with a power supply without a variable current limiter, insert a couple of parallel-coupled power resistors (429140). The lab manual and a detailed equipment list can be found on www.frederiksen.eu 5
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