I need help understanding how a piezo buzzer will affect my circuit. I have a couple of piezo buzzers. They are essentially black boxes with circuitry inside and no information. The only information I have is "works with 6VDC to 24VDC." I have pulled a couple of them apart and they are all different, one has some resistors, transistors, and a coil and the other has an IC. My questions are:
01. How can I test them to find resistance and amperage?
02. How can I calculate their effect on a circuit. Should I find their resistance and essentially put them in the circuit as a resistor?
03. They seem to cause noise in the DC circuit. It seems the amount of amperage they pull fluctuates while in use. How can I stop this?
Any help would be greatly appreciated. TIA
01. How can I test them to find resistance and amperage?
02. How can I calculate their effect on a circuit. Should I find their resistance and essentially put them in the circuit as a resistor?
03. They seem to cause noise in the DC circuit. It seems the amount of amperage they pull fluctuates while in use. How can I stop this?
Any help would be greatly appreciated. TIA