Sent:?Sunday, May 30, 2021 at 6:47 PM From:?"Dave McGuire" <mcguire@...> To:[email protected] Subject:?Re: [HP-Agilent-Keysight-equipment] A homemade diode power sensor for HP meters
On 5/30/21 1:14 PM, Francesco wrote:
> This topic is on the dead track?? It is one very interesting topic,
> considering there is one Hi number of HP 435, 436, 437 models for a low
> price is a good opportunity for small lab and student on the RF world to
> grab one of these simple instrument for 50/100 pounds, the big problem
> the second-hand market is on the hand of surplus scavengers they sell
> the hold and rusty powerhead at Hi price.
> Way no make one at a low price and nice fun to handmade one with some
> good result making a one-hybrid system like es: detector AD8318/17 the
> chopper, and the amplifier using the 8484A diagram using the chopper FET
> circuit and the NPN Transistor amplifier.
Some people have done this. I had something very much like this
running in a bench test configuration several years ago. It worked
reasonably well, but not well enough to productize, and there were still
unresolved problems. The power sensor interface is simple, but not
quite as simple as it looks.