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<blockquote data-quote="thylantyr" data-source="post: 1535905" data-attributes="member: 560358">Inspired by this post {the same post on CAF that I saw, but the forum is down},I spent 5 minutes rethinking the peak detector and have a different approach.How it works-You connect the detector to the amplifier speaker terminals, 2 wires and if theLED blinks, you hit your maximum voltage peak of the amplifier.Peak Detector Calibration-*The unit is calibrated per individual amplifier.*You connect the detector to the amplifier speaker terminals, 2 wires.*You over-drive the amp severely using a test tone where you assumethe amp is clipping.*You adjust the calibration potentiometer so the peak detector LED triggers,this sets your reference voltage for later use.Circuit idea -* Battery operated* An IC comparator* Potentiometer for reference voltage setting* A zener diode at the reference pin to isolate battery voltage fluctuactions* Optional - low battery voltage indicator {yellow LED}</blockquote>

[QUOTE="thylantyr, post: 1535905, member: 560358"] Inspired by this post {the same post on CAF that I saw, but the forum is down}, I spent 5 minutes rethinking the peak detector and have a different approach. How it works- You connect the detector to the amplifier speaker terminals, 2 wires and if the LED blinks, you hit your maximum voltage peak of the amplifier. Peak Detector Calibration- *The unit is calibrated per individual amplifier. *You connect the detector to the amplifier speaker terminals, 2 wires. *You over-drive the amp severely using a test tone where you assume the amp is clipping. *You adjust the calibration potentiometer so the peak detector LED triggers, this sets your reference voltage for later use. Circuit idea - * Battery operated * An IC comparator * Potentiometer for reference voltage setting * A zener diode at the reference pin to isolate battery voltage fluctuactions * Optional - low battery voltage indicator {yellow LED} [/QUOTE]

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