steven chiverton
Senior Member
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box size for the bajak capacitor as long as the circuit fits ok i think i will be ok look at some bajak capacitor videos on youtube take note of the hole size where the buzzer sound comes out it may be a good idea to try various round plastic discs with various hole sizes sticked over the sound hole to see what you get , if your going to get it to beep about 2 hz try the blinker or flasher led across the piezo buzzer this should do it or look at the various schematics in my onedrive of various bajak capacitor builds look how i set the flasher led up , the correct piezo buzzer according to the data does not have an internal driver circuit it says you can get them separate but i couldn't find them listed anywhere even in the data so try using a driver circuit from a buzzer that has one or in one case for my i brought a large plastic house security buzzer it had a driver inside it already so i cut it open carefully and removed the driver and used it as shown in my onedrive , the real bajak capacitor uses no current limiting resistors for th 27 volts so how it doesn't burn out anything especially if the buzzer is lower current or the flasher led at its lower current is a mystery