If the audio output is connected to equipment that has a balanced input circuit with a separate ground connection, the ground connects to OUTPUT terminal # 1. The PZ-2LA can also be powered by an external AC or DC source between 8 and 24 volts. Connect it to the electronics circuit board at INPUT screw terminals # 1 and # 2. A balanced audio output is available at OUTPUT
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screw terminals # 2 and # 3. The recommended minimum load impedance is 1000 ohms. The PZ-2L is wired for use only with Omnicron CR-1 and CR-4 recorders. The PZ-2L plugs direct into the "PZ-MIC-IN" jack on the CR-1 and CR-4 recorders. It will be powered by the recorder. If the microphone is mounted to a grounded enclosure, ground loops could occur that would cause hum. If hum is present when the microphone housing is connected to ground, remove the resistor labeled GND LIFT on the printed circuit board. The microphone is factory set to handle sound levels up to 100 dB without excessive distortion. If the sound at the mic will exceed 100 dB, change the plug-in resistor (labeled Gain) for more headroom. Removing the 1. 0K ohm resistor and replacing it with a 3. 9K resistor will provide 12 dB more headroom with a corresponding lower output signal from weak sounds. Element: Pressure Zone Electret Condenser l Frequency Response: 80-20, 000 Hz l S/N Ratio: 68 dB l Polar Pattern: Hemispherical l Impedance: 75 ohms l Output Level: 1. 4 V/Pa (+3 dB re 1 V/Pa) l Maximum SPL: 100 dB 3% THD l Equivalent Noise Level: Less than 26 dB, A weighted l PZ-2LA Power: supplied by an external 120VAC to 12VDC adapter, or 8-24 VAC/DC, 4 ma l PZ-2L Power: supplied by Omnicron VR-1PZ or VR-4PZ recorder l Dimensions: 2" x 3" x 4 " l Net Weight: 6 oz without cable l Color: Microphone and Cable are Ivory l Warranty: Limited 1 year parts & labor. If the...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
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