A: The log book intent is to provide a history of events and people entry in case there is a later problem somehow the history can be analyzed to provide an answer quickly as opposed to searching for phantom problems
dBmv is defined as 20 log (V/1mV) where V is the voltage converted into dBmv if X = 20 log (V/1mV) then V= (1/20) Antilog (X)
you use 20log for voltages and 10log for power 10log(vo^2/vi^2) = 2*10log(vo/vi) = 20log(vo/vi)
here, the power required by the receiver is the output power and that required from the source is input power. Gain in dB=10 log(output power/input power) we have, loss in dB = -gain in dB = 10 log(input power/output power) or, 50 = 10 log(input power/10nW) or, anti-log(5) = input power/10 nW so the power required from the source is antilog(5)*10nW = 1 mW
I would simply suggest taking a linear potmeter of approx a value 700% higher. Then connect a resistor of the original value +20% (approx) across linear pot middle and either side. This makes it working almost like the original logaritmic potmeter. If you want reverse log or dual log, then just connect the resistor to the other leg from middle, or halve the resistor value and connect both from the middle and to each side. If you are unsure how it works, then a spreadsheet provides you with abilities to simulate how it will work. Example of a "Linear Log Pot": A project I started on needed a reverse log taper of 10 K. This was nowhere to be found and I thought, lets cheat. I started with spreadsheet and put in a few formulas for parallell connection of resistors. I found that a 68K linear and a 12K resistor in parallell would give much the same performance curve as a logaritmic taper. It gives approx the same resistance and approx the same voltage (if used as a voltage divider) as a Log and reverse log taper.
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you can buy a Nautical Log Book / Ship's Log on Book Factory online
A log book you must sign before entering a ship's gangway.
A vehicle log book does not make a person the legal owner of the vehicle. The log book will show that the person is driving and maintain the car.
To answer a reading log you have to read a book and then you summarise it.
A book in which you record the results of an experiment.
In the ship's log, or ship's log-book.
In the ship's log, or ship's log-book.
The Bandar-log in Kiplings "Jungle Book" are the monkey people. They first appear in the story "Kaa's Hunting".
detail detention log book document
Ancient sailors would toss a bit of wood, called a log, over the side, and by reckoning the time it took for the boat to pass the log they could estimate the speed of the boat through the water. From this comes the "log", or log book, in which the progress of a vessel is recorded.
A Farewell to Arms is a good book reference to know the that aircraft log book was practiced in World War 1.
log book violation