garvind25
Full Member level 3
Hi,
I wanted to connect a buzzer with an I/O pin of CPLD (XC2C128 – VQ 100 package). The I/O pin will be driven at 3.3v (LVCMOS logic levels). How should I connect the buzzer: directly connect the positive terminal of the buzzer to the I/O pin with a series resistance or use a npn transistor to drive the buzzer as a load to the collector of the transistor. I only need to have a continuous beep when required. I am planning to use the buzzer as per the link here.
I could not find its datasheet. Does anyone have any prior experience with such devices pls? To be specific, how much minimum current does it require for a beep?
Thanks and Regards,
Arvind Gupta.
I wanted to connect a buzzer with an I/O pin of CPLD (XC2C128 – VQ 100 package). The I/O pin will be driven at 3.3v (LVCMOS logic levels). How should I connect the buzzer: directly connect the positive terminal of the buzzer to the I/O pin with a series resistance or use a npn transistor to drive the buzzer as a load to the collector of the transistor. I only need to have a continuous beep when required. I am planning to use the buzzer as per the link here.
I could not find its datasheet. Does anyone have any prior experience with such devices pls? To be specific, how much minimum current does it require for a beep?
Thanks and Regards,
Arvind Gupta.