This is a High Voltage switching device for driving coils and which have big impedance when it is switched off. It can be use in Back-EMF energy recovery tests, Newman coils electronic commutator.....This device is drived by an opto-coupler and can be easily connected with an opto-switch for synchronisation phase (with plastic shutters) with a Newman commutator device for instance.....
BE CAREFULL, USE EXTREME CAUTION !!!, this device use High voltage, disconnect and discharge capacitor before touch it.