Our high voltage pulse generator can be used in electronic fencing systems for bear repulsion. For mountaineering enthusiasts, tents may be set up outdoors at night. If we encounter bears, foxes and other animals, it will make us afraid. At this time, a portable electronic fence is needed to isolate the danger and let us sleep until dawn.
Recently, a customer asked us about the customization of pulse transformer. Their requirements of the high voltage pulse generator are as follows.
They need to reduce the weight of the current electric fence energizers(pulse generators) by switching to a lightweight transformer(probably air core). The circuit consists of two parallel capacitors, a total of 6.45μF, charged up to 380V by a flyback converter from a 12V source. The capacitors are discharged across the primary coil of the pulse transformer with a thyristor switch once every 1.5 seconds. Our current model weighs about 800g due to a heavy iron core transformer.
The electric fence energizers for bear need to meet pulse constraints on resistive loads between 500Ω to 1MΩ. A pulse should last between 60μs and 200μs, and deliver 0.15J to 0.5J across a 500Ω resistive load.
The pulse transformer that is used has these parameters: primary and secondary coil resistances of 1Ω, primary inductance of 30μH, secondary inductance of 30mH, turns ratio of 1:32, coupling coefficient above 0.8, peak primary pulse current of 150A, and peak secondary pulse current of 8A. Test data on our iron core model found a peak primary pulse voltage of 2500V due to reactive effects of the capacitor discharging across the pulse transformer, although this is likely different for an air core transformer. Peak secondary pulse voltage was 12KV.
They provide the drawing for our reference. Any customization needs, you can contact us: fgd@twgdmall.com, All drawings and samples are available.
