To understand the output power of different audio devices such as speakers and amplifiers, two main parameters are Peak watts and RMS. They define the power in different ways and their difference are important for finding the output power of audio device
Operational amplifiers might be used as shapers, but limit performance with their noise behavior and bandwidth. The trigger is usually implemented using a discriminator or comparator, which outputs a rectangular pulse once the signal surpasses an amplitude threshold relative to the baseline. The rectangu...
(click to enlarge) I started with using only U2.1 and U2.2. Feeding the audio signal direct to C3. The distortion and noise is very low (red trace). However, I wanted to buffer the input impedance as 5K is rather low, so I added U1.1. The circuit does work, but distortion is ra...
Does this mean we have no need to perform time-domain measurements? Not at all. The time domain is better for many measurements, and some can be made only in the time domain. For example, pure time-domain measurements include pulse rise and fall times, overshoot and ringing. Why measure ...
What's RMS Power or RMS Watts? by Paul Quillen, 1993 This is an interesting subject. Both RMS Power and RMS Watts are a fiction created by the Federal Trade Commission. In the mid-1970's the FTC decided that they would create a standard for power ratings for power amplifiers. Their ...
https://en.wikipedia.org/wiki/Root_mean_square GOOGLE is your friend. For a pure sine wave V RMS is the same as V ac. If distorted, it is a more accurate description of the "pressure" being applied. Volts is after all a measure of force. 2V AC is the defacto consumer line level...
depending on the frequencies of the signal. RMS is an expression that comes from the mathematical equation used to find the square root of the mean of the squared values. For those of you who are inclined to examine the math without getting headaches, there is an excellent description of thi...
Protection Relay Test-Set Voltage Amplifiers Here’s a quick summary of the main voltage amplifier specifications: * 6-voltage channels are available What do these specs mean to you? All of the test-sets can provide a power supply for a relay, and supply three-phase voltages up to the spec...
Why does the load impedance need to exceed the microphone's output impedance? To better understand, we'll change our reference point from the microphone to the microphone preamplifier. From this perspective, the microphone becomes the “source,” and the preamp becomes the “load”: ...
By default, the remote control changes the volume level of Denon amplifiers. By holding down the right keys for the right duration of time you can switch it to control the output level of the variable outputs. They will go as hot as 4.5-volts RMS. This arrangement would suit those who ...