Remote audio level indicator circuit

This design is for an interpolating scanner, a circuit featuring multiple signal inputs, a control voltage input, and a signal output. The output selectively transitions between inputs, smoothly fading from one to the next as the control voltage increases. A...

This unit is designed to monitor the audio output level across a loudspeaker during the alignment of radios. A simple passive circuit arrangement has been utilized, as high precision is not required. The circuit functions as a voltage-doubling rectifier that...

This indicator can be used, or see if your speakers can be damaged by the noise power. With P1 you can set the limit to which D1 LED lights. The pot is 100k here, you can even experiment with other...