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Calpe
Calpe il y a 9 heures
It's now the end of February 2017 and the Q-Watt is still going strong with the kits again available from March. As in my earlier post of November 19, 2016, i still suggest a much needed rewrite of the Q-Watt is needed taking on board all the issues, suggestions, types of PSU's etc etc., its the least that can be done.
Q-Watt - Simple Audio Power Amplifier (110656)
F1CHF
F1CHF il y a 19 heures
hello AD8317 datasheet says 10 ghz and I didn't find a better one on AD familly. One suggestion : on the AD8317 PCB corner, add a 4 wire connector to be able to CUT this sensor and put in a remote box ... I will allow to mesure very near of the DUT a simple 4 wires cable between the "remote box" and the main board is suffisant. So two options are possible , sensor on the main board or install sensor board in a "remote box" my two cents ... Francois F1CHF  
RF Power Meter with 1MHz-10GHz bandwidth and 55dB dynamic range
Calpe
Calpe il y a 1 jour
The Switched Mode Power i have used is from Connexelectronic, a SMPS500R. The spec. states "The SMPS500R Switched Mode Power Supply is designed to be used for Audio Amplifiers.....SMPS use state of art, very efficient LLC Series Resonant Converter Topology." In this forum Elektor offered another brand, but i had already chosen this one and the quality is superb!  
Q-Watt - Simple Audio Power Amplifier (110656)
Pascal Hibon
Pascal Hibon il y a 1 jour
As I mentioned before Gerard61, that remains to be seen... We're no longer living the eighties!  
Q-Watt - Simple Audio Power Amplifier (110656)
BreedJ
BreedJ il y a 1 jour
I've added the source code to the arduino cloud.https://create.arduino.cc/editor/breedj/e9287a73-b31b-49e6-aef5-4fb91888a53c/preview
RF Power Meter with 1MHz-10GHz bandwidth and 55dB dynamic range