Classic Peak Detectors. Some classic circuits are still going after many decades. One of them is the peak detector, ... In all cases (single op amp and dual op amp circuits) a diode in the feedback ...

Fig 1 can detect the peak of either positive or negative inputs, yet it operates from a single supply. The circuit uses two unity-gain amplifiers to monitor the input signal, one an inverting ...

As an extra flourish, [Duncan] added some hardware audio signal peak detection, fed from the speaker output, which was then sampled by the ATmega328P to be able to flash the lights in time with ...

The diode bias current is created by a transistor-based peak detector circuit driven off the main audio signal. But don’t just take our word for it, watch the video after the break.

The standard hardware requirements for sample-and-hold and peak detector circuits apply to D1, C1, and A2. C1 must be a high-quality capacitor, D1 must be a low-leakage diode, and the bias current ...

The diode provides the rectification, just as it would in a simple peak detector. Similarly, the 100-k resistor and 10-nF capacitor in parallel provide the low-pass filtering to average the peak ...

Analog Devices has its first dual-channel radio frequency root-mean-square (rms) power detector for precision measurement of transmit and receive signals up to 2.7GHz. The AD8364 is designed to ...