Audio electrolytic capacitors electrolytic capacitors _ _ Green Quan Electronic

Qing Quan Electronics - aluminum electrolytic capacitor R & D and production experts! Electrolytic capacitor polarity discrimination if you do not know the polarity of electrolytic capacitors used multimeter to measure the polarity of the power block. We know that only the electrolytic capacitor anode connected to positive power supply (power block when the black pen), negative termination power negative (power block when the red pen), the electrolytic capacitor leakage current was small (leakage resistance is large). On the contrary, the electrolytic capacitor leakage current increases (leakage resistance decreases). Measurement, presupposes a very "+" pole, let the multimeter black pen contact, the other electrode in contact multimeter red pen, write down the hands stop scale (major resistance left hands), then capacitor discharge (only two wires touch it), two pen swap, re-measurement. Two measurements, hands last stop position left (major resistance) is that, is that the black pen then the positive electrolytic capacitor. When measuring the best selection of R * 100 or R * 1K block. Polar capacitor with a multimeter to determine this approach is useful and in line with scientific evidence! Qing Quan focus on production and development of electronic electrolytic capacitors, full range of electrolytic capacitors, model complete, quality advantages, the price is reasonable! Qing Quan Electronics - aluminum electrolytic capacitor R & D and production experts! It features aluminum electrolytic capacitors: Advantages: small size, high capacity, low prices. Disadvantages: large leakage, loss, capacity error, time poor stability, poor insulation quality, the ability to withstand over-voltages worst, easily breakdown, and its capacity, loss of temperature, frequency characteristic is very poor, so in electronic the device can only be used as a rectifier filter, audio bypass or low frequency coupling purposes.