LC circuit tester by LA8AK
The circuit for this tester was uploaded to
Yahoo-group: LesAmisduParaset on Wed Dec 26, 2012 by Vittorio Bruni, I0VBR.
It is a circuit for determining the frequency range of a tuning circuit, made up from a coil and a capacitor. The tester circuit is originally designed by LA8AK.
I decided to give it a try and threw a handful of parts to a piece of pre-fab circuit board and: it works! On this page I show some photos of the result and the links of the schematic file. The file can also be found on Yahoo-group: LesAmisduParaset, in the file section.
|The RX coil
for the Paraset, that I made first. And a 100pF air variable
Fully meshed the LC circuit is tuned to 3,059 MC.
|Half way out gives 3,742 MC|
|Minimum capacity gives 7,353 MC.|
|This is the circuit. If you want it, right-click on the diagram and choose: "Save picture as.." and fill in where and how you want to save it.|