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It was the invention of first semiconductor devices it has four layers. It is also called as PNPN diode. It is equal to a thyristor without a gate terminal which means the gate terminal is disconnected. As there is no trigger inputs the only way the diode can conduct is by providing forward voltage. It stays on one’s it turned “ON” and stays off one’s it turned “OFF”. The diode has two operating states conducting and non-conducting. In non-conducting state the diode conducts with less voltage. It is also called as snap-off diode or charge-storage diode. These are the special type of diodes which stores the charge from positive pulse and uses in the negative pulse of the sinusoidal signals. The rise time of the current pulse is equal to the snap time. Due to this phenomenon it has speed recovery pulses.
HVC HV diode peak working revere voltage(VRWM) from 1kv to 30kv, high voltage silicon stack voltage up to 500kv,Average Forward Current( IF(AV)) from 10MA to 20A, Reverse Recovery Time(trr) from 35ns to 2000ns,working frequency 50HZ to 200kHZ. HVC high voltage diode with the following advantage feature: 1) Low leakage current, high surge, and high current shock resistance 2) High reverse voltage, low forward current and avalanche breakdown protection. 3) Fast response, high efficiency and ultra-fast recover tiime. 4) High heat resistance, PN junction temperature up to 175C Find extra info on Hvca diodes.
It turned out that the use of high-voltage customers of ceramic capacitors as components of the generator high voltage on the capacitor to use 2200PF nominal, nominal capacity 35 kv tension, 25 mm in diameter.Price was 3.8 Yuan.Material for the Y5V.Its use within one month after the failure of a capacitor discovery will be the case. As you can see in the table above, the insulation resistance is the largest high-voltage N4700 material, the worst performance capacitors, must belong to Y5U or Y5V above.Difference of 20 times insulation resistance.Insulation resistance superior to the current capacity of the largest, therefore, from the current perspective, is clearly good N4700 material.
HV ceramic capacitors China : In theory (assuming capacitor is pure), the larger the capacitance, the smaller the impedance and the higher the frequency through. But in fact, capacitors above 1µF most are electrolytic capacitors, has great component of inductance, so if high frequency, the impedance will increase on the contrary. Sometimes we see a larger capacitance electrolytic capacitor in parallel with a small capacitor, the large one to pass low-frequency while the small one to pass high frequency. The effect of capacitor is to pass high-frequency and resistant low-frequency. The larger the capacitor, the easier low-frequency can through. It always used in filter,HV door knob capacitors (1000µF) filter low-frequency, and low capacitance (20pF) filter high-frequency. Users had the image of the filter capacitor as a “reservoir.” As the voltage across the capacitor will not sudden change, therefore, the higher the frequency, the greater the attenuation. The capacitor just like a reservoir and the capacitance is like the water, reservoir will not change by adding a few water or evaporation. It translates the voltage change into current change, the higher the frequency, the greater the peak current, which buffer the voltage. Filter is just the process of charging and discharging. Read more information at hv-caps.com.