Thursday, 9 February 2017

measurement - Calculate the appropriate bias voltage (and resistor) of a condenser microphone


I have a condenser microphone that has no any model name or number. As we know condenser microphones need a bias voltage for operation. Some microphones need \$2 V\$[1]. and some need more. As we can not feed microphone more than its \$V_{max}\$, is there any way and measuring method to calculate the appropriate bias voltage of it without having its datasheet?


Edit:
What is the appropriate Resistor to build the biasing voltage?


schematic


simulate this circuit – Schematic created using CircuitLab




No comments:

Post a Comment

arduino - Can I use TI's cc2541 BLE as micro controller to perform operations/ processing instead of ATmega328P AU to save cost?

I am using arduino pro mini (which contains Atmega328p AU ) along with cc2541(HM-10) to process and transfer data over BLE to smartphone. I...