So I'm basically trying to hook up the positive end of a piezo disc to the base of a BJT NPN transistor but it seems I'm not getting enough voltage out of the disc to actually push trough the base. I'm using a BC547B transistor which, according to the datasheet, has a voltage on rating for the base between 0.55 - 0.7 V. Now it's really difficult to actually see what voltage the disc supplies just with a multimeter since the pulse is really fast (don't have an oscilloscope). Can it be that the voltage is simply to low? If so, is there any solution to this? Can it be that the base is activated but that the pulse is so fast that the current I get out of the emitter is so brief that I don't see the effect (for example lighting up a LED)?
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