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Audio Signal Measurement Digital Millivolts Meter Circuit PIC16F88

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Millivolts meter circuit PIC16F88 based on 2 × 16 LCD display there mV, DBV, dBm signal levels can show audio signal input section ad623 and ad8307 used 12-15volt DC adapter operated on supply input LM317 regulated with built pic software assembly prepared by the asm hex placement There are plans pcb files

Input Impedance: 100kω (up to 600Ω balanced input) changed Frequency Measuring Range: 5Hz to 100kHz below, so above Maximum Signal Input Level: 1.4V RMS (DBV 3.0, 5.2 dbm/600ω)

At least Signal Input Level: 160μv RMS (-76dbv, -73.8dbm/600ω) Measuring Linearity: ± 0.3dB about Measurement Accuracy: ± 3% to about Power requirements: 12-15V DC <200 mA with LCD

PIC16F88 Millivolts Meter Project

Audio Signal Measurement Digital   Millivolts Meter Circuit PIC16F88 ses sinyal olcumu dijital milivolt metre

Versatile display of signal level in mV, dBv & dbm Want to measure small signals at audio frequencies Here is a low-cost digital audio millivoltmeter, which allows you to audio signals for the measurement of below 5 Hz to 100 kHz. Besides the indication of the height in millivolts and dBV, it also shows the corresponding level dBm into 600 ohms.

Source: http://www.siliconchip.com.au/cms/A_111191/article.html

Audio Signal Measurement Digital Millivolts Meter Circuit PIC16F88 schematic pcb an soruce code files alternative link audio-signal-measurement-digital-millivolts-meter-circuit-pic16f88.rar alternative link2 alternative link3

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