How do the users test buzzer?
Majority of the buzzer users do not have the following five equipments for the testing buzzers, especially the first and the second ones.
1. The Function Signaling Generator
2. The Decibel Meter (Noise Meter)
3. The Power Stabler
4. The circuit tester
5. The voltage converter/ frequency converter (0~300Vac/3~10A)
There is a certain regulation and operation for testing buzzers in the business circle. But what should the users do when no equipment for buzzer testing is available? Commonly, the users will install the buzzer on their own products and test whether the buzzer will produce noises? This is certainly a very good way of testing; however, the users will oppugn the problems raised, like the noises collected seems to be lower than the noises created when using other brand buzzers and the noises somewhat seem to be similar and so on. In fact, this problem emerges endlessly. It can also be understood that it is the problem over which both the users and the manufacturers will have disputes. It is because that when testing the buzzers, most users will use ears to listen. The differences in users’ ears will make some people find the buzzers loud and other people find the buzzers light. This reason resembles eating and buying clothes:
some people find it good and others find it bad. This is why our company finds it unjust from the user’s opinions.
Following suggestions are from our company for the users’ references:
1. When the users have the equipments, the users should inspect the bussers according to the specification we provided
2. If the users don’t have the equipments, they can use the limited samples as a contrast during the source verification test. In other words, they should file the accepted and eligible samples as tools for later contrast.
1. Piezo electric buzzers with no sources (External Drive).
The function signaling generator, the decibel meter and the circuit tester will be used when testing. When executing the source verification test, the users shall adjust the voltage and the frequency of the buzzers according to the buzzer specification provided by our company.
For example, a client is using our product PT-1540PM-P. Its rating voltage is 5Vp-p; its frequency is 4.0KHz (must use 1/2 duty square wave); its testing distance is 10cm, its minimum sound pressure is 85dB/min; its maximum current is 1.5mA/max and its capacitance is 10,000pF30% at 120Hz.
The ways of connections for testing (I) are as follows:
1. To measure the current of the buzzers (mA)
2. To measure the sound pressure of the buzzers (dB)
The way of connections for testing (II) is as follows:
1. To measure the capacitance of the buzzers (pF)
2. Piezo electric buzzers with no sources (Self Drive).
The function signaling generator, the power stabler, the decibel meter and the circuit tester will be used when testing. When executing the source verification test, the users shall adjust the voltage Vdc of the buzzers according to the buzzer specification manual provided by our company.
For example, a client is using our product PT-3534FP. Its rating voltage is 12Vdc; its frequency is 3.4KHz; its testing distance is 10cm, its minimum sound pressure is 105dB/min and its maximum current is 12.0mA/max.
The ways of connections for testing are as follow:
1. To measure the current of the buzzers (mA)
2. To measure the sound pressure of the buzzers (dB)
3. To measure the frequency of the buzzers (KHz)
2.1. Piezo electric buzzers with no sources (Self Drive).
The function signaling generator, the power stabler, the decibel meter and the circuit tester will be used when testing. When executing the source verification test, the users shall adjust the voltage Vdc of the buzzers according to the buzzer specification manual provided by our company.
For example, a client is using our product PT-2130FP. Its rating voltage is 12Vdc; its frequency is 3.0KHz; its testing distance is 30cm, its minimum sound pressure is 80dB/min and its maximum current is 12.0mA/max.
The ways of connections for testing are as follows:
1. To measure the current of the buzzers (mA)
2. To measure the sound pressure of the buzzers (dB)
3. To measure the frequency of the buzzers (KHz)
3. Piezo electric buzzers with sources.
The function signaling generator, the power stabler, the decibel meter and the circuit tester will be used when testing. When executing the source verification test, the users shall adjust the voltage Vdc of the buzzers according to the buzzer specification manual provided by our company.
For example, a client is using our product PK-20A38P. Its rating voltage is 12Vdc; its frequency is 3.8KHz; its testing distance is 30cm, its minimum sound pressure is 95dB/min and its maximum current is 15.0mA/max.
The ways of connections for testing are as follows:
1. To measure the current of the buzzers (mA)
2. To measure the sound pressure of the buzzers (dB)
3. To measure the frequency of the buzzers (KHz)
4. Magnetic buzzers with no sources.
The function signaling generator, the decibel meter and the circuit tester will be used when testing.
When executing the source verification test, the users shall adjust the voltage (Vp-p) and the frequency (KHz) of the buzzers according to the buzzer specification manual provided by our company.
For example, a client is using our product PB-1224PE-05. Its rating voltage is 5.0Vp-p; its frequency is 2.4KHz (must use 1/2 duty square wave); its testing distance is 10cm, its minimum audio pressure is 85dB/min; its maximum current is 50mA/max and its resistance value is 45 ± 5 Ω
The ways of connections for testing (I) are as follow:
1. To measure the current of the buzzers (mA)
2. To measure the sound pressure of the buzzers (dB)
The way of connections for testing (II) is as follows:
1. To measure the resistance value of the buzzers
5. Magnetic buzzers with sources.
The function signaling generator, the power stabler, the decibel meter and the circuit tester will be used when testing. When executing the source verification test, the users shall adjust the voltage Vdc of the buzzers according to the buzzer specification manual provided by our company.
For example, a client is using our product PB-12N23P-12. Its rating voltage is 12Vdc; its frequency is 2.3KHz; its testing distance is 10cm, its minimum sound pressure is 85dB/min and its maximum current is 30mA/max.
The ways of connections for testing are as follow:
1 To measure the current of the buzzers (mA)
2 To measure the sound pressure of the buzzers (dB)
3 To measure the frequency of the buzzers (KHz)
6. Piezo electric buzzers with sources (Panel Mounting Type).
The function signaling generator, the decibel meter, the circuit tester and the voltage converter/ frequency converter (0~300Vac/3~10A) will be used when testing. When executing the source verification test, the users shall adjust the voltage (Vac/Vdc) of the buzzers according to the buzzer specification manual provided by our company.
For example, a client is using our product PK-35A29ER-220. Its rating voltage is 220Vac/Vdc; its frequency is 2.9KHz; its testing distance is 30cm, its minimum sound pressure is 90dB/min and its maximum current is 18mA/max.
The ways of connections for testing are as follow:
1. To measure the current of the buzzers (mA)
2. To measure the sound pressure of the buzzers (dB)
3. To measure the frequency of the buzzers (KHz)
