Hi,
Im using a Piezo Audio Indicator model KPE-276A
http://www.datasheetarchive.com/pdf-datasheets/Datasheets-12/DSA-228130.pdf (not using the KPE-276 because this one is louder..)
It is part of a Circuit which can get 12-24V and since it can tolerate up to 20V i put a resistor 500 oham in serial to it.
simple schematic (w/o the relay and holding circuit):
Vcc-------Resistor-------Speaker-------GND
The Speaker works but sometimes it makes a very low sound as if choking.
when i connect it directly to Vcc 12-20V it works perfect allways.
Is there a problem connecting a resistor to Piezoelctric device ?
Do i need a different resistor or maybe put diode instead .... ?
Thanks in advance.
Im using a Piezo Audio Indicator model KPE-276A
http://www.datasheetarchive.com/pdf-datasheets/Datasheets-12/DSA-228130.pdf (not using the KPE-276 because this one is louder..)
It is part of a Circuit which can get 12-24V and since it can tolerate up to 20V i put a resistor 500 oham in serial to it.
simple schematic (w/o the relay and holding circuit):
Vcc-------Resistor-------Speaker-------GND
The Speaker works but sometimes it makes a very low sound as if choking.
when i connect it directly to Vcc 12-20V it works perfect allways.
Is there a problem connecting a resistor to Piezoelctric device ?
Do i need a different resistor or maybe put diode instead .... ?
Thanks in advance.