Tag Archives: Demodulator

Below is figure of a transistor square-law detector. At a low quiescent collector current (95 uA), it biased to operate so the output will be significantly nonlinear. To test the circuit, we can feed base with a 550 kHz RF … Continue reading →

We can simply a rectifier using a linear detector. It’s not only have no gain, but also no distortion. An example from two op-amps is the easy one as shown in the following circuit diagram. The second op-amp is a … Continue reading →

This view is not far from wrong because the operation of FM detectors is widely regarded as mysterious. The ratio detector to find out how it works, without going deeply into the theory at this point, or studying other forms … Continue reading →