تسجيل الدخول لسرعة الوصول إلى أفضل الصفقات. انقر هنا إذا لم يكن لديك حساب.

What is a load box? Professional

منذ 3 أشهر Multimedia Saïda   63 الآراء

-- دج

  • img
موقعك: Saïda
السعر: -- دج

High voltage test

The high voltage tester (also called dielectric strength test or hipot test) can be carried out using AC or DC. If the high voltage test is performed using DC, it is then combined with insulation; if the high voltage test is made using AC, this is more stressful for the sample and therefore carried out according to the sketch below.

Measurement of a high voltage test under alternating current is performed using an alternating voltage (50Hz) adjustable to an effective 50V to 1,500V. As is the case with direct current, the high voltage test detects any sudden rise of current up to a programmed threshold.

The short circuit test is maintained by default. The rise time is more than 500 ms and the application time at least one period.

Warning: The high voltage test under alternating current is penalised by the capacitive value of the tested equipment. It must be remembered that the generator power is limited to 5 mA.

signal generator, electronic test instrument that delivers an accurately calibrated signal at frequencies from the audio to the microwave ranges. It is valuable in the development and testing of electronic hardware. The signal generator provides a signal that can be adjusted according to frequency, output voltage, impedence, waveform, and modulation.

Signal generators are of five major types: oscillators, which generate sine waves useful in measuring the response of loudspeakers, amplifiers, microphones, transducers, and acoustic systems; standard signal generators, which generate sine waves over a wide range of output power and modulation, used, for example, to test radio receivers and measure gain, bandwidth, and signal-to-noise ratio; frequency synthesizers, which generate highly precise output frequencies over wide ranges; pulse generators, which produce pulsed signals at precise duration at precise frequencies; and random-noise generators, which produce a wideband noise for various types of electronic, mechanical, and psychological testing.

Power analyzer measurements

Power analyzers can make a variety of measurements dependent upon the manufacturer and the model, but typically power analyzers are likely to be able to measure parameters including: voltage; current; power; peak, mean and RMS parameters; harmonics; phase, and a variety of other parameters.