Broadband Noise Generator

To test some electronic systems such as RF communication, filter, or audio we often need random noise source. This article shows the circuit that generates an RMS amplitude regulated noise source with selectable bandwidth. This circuit is suitable for wide range of application since it has 1 KHz to 5 MHz decade ranges selectable   bandwidth and 300mV RMS output. Here […]

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Accelerometer Signal Amplifier

Inverting mode amplifier is needed by precision accelerometers because that usually charge output device. This amplifier is used to convert charge into voltage output. Here is an example of accelerometer with DC servo. C1 is used to convert the charge from the transducer into voltage, which should equal the input capacitance of the op amp plus the transducer capacitance. The […]

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