10 dB Power Attenuators
The 10 dB attenuators shown here, are all built with good available 1 W resistors of the E12-series. Each of the 4 attenuators is designed for a different value of input power. They cover the power spectrum from 500 mW to 5 watts.
The higher the input power the more resistors are needed. The power of each attenuator is the nominal power.
In the design of the Power Attenuator on this website, I have chosen a Derating of 25 %. this means that the nominal power is 1/4 of the Maximum Power. Or the Maximum power is 4 times the Nominal power.
and with no cooling of the resistors, they will easily become hot in a short while.