Comparing dBs to Resistor Color Codes

02/10/2021

There is a interesting comparison that I have found between decoding resistor color codes and decoding Decibel values:

Resistor Color Codes

On resistors, the first two color bands describe a particular value, without a decimal point description
- i.e. the digits "39" can be 3.9 or 39 or 390
the 3^rd band is the Multiplier, and this is what actually determines the composite value and range of that resistor.

(On a side note, I taught fluent color-code in 18 minutes, in the classroom for over 30 yrs.)

The Basic Decibel Value is the value that expresses or converts Logarithymically to a "Factor" for gain or loss
The number to the left of that Basic Decibel Value is the Multiplier, as a power of the Base 10^x.
- With "1" simply being a Multiplier of 10 times the Factor, or
- with "2" simply being a Multplier of 100 times the Factor, or
- with "3" simply being a Multiplier of 1,000 times the Factor.
Actually, the entire number expressed is actually a Logarithic Value as an exponent of the Base 10^x, but considering that there is a "hidden decimal point" involved.
For example, 24 dB would be considered as 10^2.4 (note the decimal point between the 2.4)

See these charts and examples of DB_Tables.html or DB_Tables PDF (no points discounted for speiling errers)