[sdiy] voltage-controlled AM radio tuning

[René Schmitz]

cs e schrieb:
> The varactor I looked at had about a 15-45 pF range, using our voltage
> levels.  Like Mr. Perry said, you can get a greater capacitance range
> with larger voltages, depending on the varactor.

Also you can parallel varactors.

Zeners make relatively good varactors. Only up to their zener voltage of 
course.

Cheers,
  René

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159