On 01/29/2014 01:03 PM, Jerry Peters wrote:
Kaz Kylheku wrote:
On 2014-01-28, wrote:
If a diode is not active, why ? You can modulate with it. You can switch with it. This can be done with solid state diodes or otherwise.

A diode is not active by itself, because it's a two-port circuit. There is no
way for it to have an input which controls an output.

Switching diode which switches an AC signal with a DC signal. It's
been done for years.

PIN diode which can switch or attenuate an RF signal with a DC
current.

--snip--


Pin diodes don't attenuate. They connect resistors.