IS200VTCCH1CBB | GE | Electronic detonator energy storage capacitor

Description

IS200VTCCH1CBB | GE | Electronic detonator energy storage capacitor

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Under the premise of equal module power consumption, the larger the capacitance value of the energy storage capacitor, the longer the delay time that the detonator can set, and the more charges remain on the energy storage capacitor during IS200VTCCH1CBB detonation, the greater the energy obtained by the detonator explosive, and the higher the detonation reliability. In terms of unit volume capacitance, tantalum capacitors have advantages over solid-state aluminum electrolytic capacitors, but due to voltage resistance issues, tantalum capacitors used for high voltage have a larger size. Select 100 μ F withstand voltage of 25 V, with dimensions of Φ Solid state capacitance of 5 × 8 mm and 68 μ F withstand voltage of 20 V, compared with tantalum capacitors with dimensions of 6 mm x 3.2 mm x 2.5 mm. The shell of electronic detonators is cylindrical, so the shape of aluminum electrolytic capacitors is more suitable for the assembly of electronic detonators. Due to the fact that the PCB (printed circuit board) of the electronic detonator module needs to be horizontally placed inside the shell through the center of the shell cross-section, the shell radius required for the Tan electrolytic capacitor scheme is 1649901677311935.png, while the shell radius required for the aluminum electrolytic capacitor is: Φ = 5/2=2.5 mm, it can be seen that using aluminum electrolytic capacitors not only increases the capacitance by 50%, but also reduces the radius of the electronic detonator shell.

Applying the rated DC working voltage to the capacitor, a large charging current is observed at the beginning, and IS200VTCCH1CBB decreases over time, reaching a certain final value, which is called leakage current. The magnitude of leakage current increases with the increase of applied voltage, decreases with the increase of applied voltage time, and increases with the increase of capacitor capacity. In the delayed detonation stage of electronic detonators, the module is only powered by its energy storage capacitor. If the leakage current of the energy storage capacitor is large, the stored energy will be lost with the leakage current during the delay stage. If the detonating bridge wire does not obtain enough energy from the energy storage capacitor during detonation, it will cause a refusal to detonate phenomenon, seriously affecting the efficiency and safety of blasting engineering. Therefore, the leakage current characteristics are also an important factor in evaluating the quality of electronic detonator energy storage capacitors.

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