[ARC5] Resistor Excursions

[Richard Knoppow]

    What is the source of your information?  I have measured many CC 
resistors using a Boonton RX-Meter and found they become more reactive 
at RF. While many think film resistors become inductive I have not found 
that true. Curiously enough the examples in the Boonton handbook show 
the same thing.
    I was taught the same thing about CC resistors but it seems not to 
be true.

On 4/19/2024 4:23 PM, Bob kb8tq wrote:
> Hi
> 
> If you *do* decide to replace CC’s with a different type of resistors, do a deep dive into just how weird CC’s are at RF. Unlike pretty much all other resistors, they drop value, but stay resistive as frequency goes up. While that sounds a lot like a resistor model that includes a cap, it’s not. The phase shift with “pure resistive” is not the same ….
> 
> How much does this matter? It very much depends on how tricky the circuit happens to be. In many cases … not a big deal.
> 
> Bob
> 

-- 
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998