Level in psycho acoustics as subjectivly perceived loudness (volume)

2do 2 6 15 Amp Extension Cord

The vague human feeling of the double loudness (volume) is specified
with about 6 to 10 dB. This personal feeling is not an exactly measurable value.

Conversion Factor, Ratio, or Gain to a Level Value (Decibels dB)
Amplifier conversion – Convert decibels to voltage gain / loss
Calculator Voltage Gain – Voltage Loss and Power Gain – Power Loss

Conversion: Gain G, Voltage ratioAV, and Power ratioAP

Voltage gain in dB


Power gain in dB

Voltage ratio = amplification factor (voltage)
Power ratio = amplification factor (power)
V1 = Vin and V2 = Vout.
V2 > V1 or Vout > Vin means amplification. The dB value is positive. (+)
V2 < V1 or Vout < Vin means damping. The dB value is negative. (−)
V2/V1 or Vout/Vin means the ratio. The amplification or the damping in dB is:
L = 20 × log (voltage ratio V2 / V1) in dB. V1 = Vin is the reference.


The word 'power amplifier' is a misnomer - especially in audio engineering.
Voltage and current can be amplified. The strange term 'power amplifier' has
become understood to mean an amplifier that is intended to drive a load such
as a loudspeaker.
We call the product of current gain and voltage gain 'power amplification'.


2do 2 6 15 amp extension cord

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2do 2 6 15 Amp Power Supply

Push Sync

We’re very excited to announce that for the very first time, 2Do will include support for transparent, background Push Sync. In simpler words, making a change on one device will (almost) immediately sync all of your other devices, transparently in the background. You no longer will have to rely on iOS to (in)frequently sync 2Do in the background, or wait for changes to appear after you’ve launched the app, including app badge updates. This will work irrespective of which sync method you’re currently using, giving you the freedom to pick whatever sync method you prefer, including your very own CalDAV server (unlike other apps that force you into using their custom cloud storage just for this one feature to work). How amazing is that?
This new feature is at first going to be available for all iOS devices, starting with v3.6, and will later be extended to support Mac OS X. Push Sync will not only result in rapid sync, but will also extend the battery life of your devices as it’s going to be a lot more energy efficient.

Mathway

There will be no switches to toggle, and no settings to mess around with – it’ll just work after you update to v3.6. In fact, you won’t even notice it, except your other devices won’t show you stale data at launch anymore. It’s that cool!

2do 2 6 15 Amp Extension Cord

Update: v3.6 is now available on the App Store!