hello
I want to build an antenna analyser using a wheat stone bridge and arduino
I have read about analysers measuring from zero up to several hundred ohms.
how does this work?
I have read that the frequency range of a wheat stone bridge can be up to gigahertz. but it doesn't mention the impedance range. does this have to do with the ADC in the arduino.
i read about resolution and that for an 8 bit ADC with 255 values, say 10v. the 10v would be divided into 255 and give 0.0392v for each value. so if im right 00000011 (3) would be a voltage of 3 x 0.0392v = 0.1176v?
does the resolution dictate the impedance range. the arduino has 10 bit ADC with 1023 values and the DDS module has 2vpk-pk. i don't know if i have to use 2vpk-pk or 1vpk when finding the resolution.
i did this:
10 bit ADC = 1024 values
2vpk-pk / 1024 = 1.9mv
1.9mv per value
does it have something to do with the reactive components and formulas:
1/2piFC and 2piFL
i don't know enough about this to know what to search for.
any help would be great, a point at some reading material would do it!
thanks
simon
Christmas soon!!! WOOOOOOOOOOOOOOOOOOOO
this year i intend to catch santa in the process, i got a tranq-gun and electrified net!
last year i made a mistake and zapped my brother with a 50,000 volt cattle prod, thought he was santa. and the year before that i shot a bazooka at the neighbours cat (it was throwing a shadow on the wall, i thought it was a reindeer!)
I want to build an antenna analyser using a wheat stone bridge and arduino
I have read about analysers measuring from zero up to several hundred ohms.
how does this work?
I have read that the frequency range of a wheat stone bridge can be up to gigahertz. but it doesn't mention the impedance range. does this have to do with the ADC in the arduino.
i read about resolution and that for an 8 bit ADC with 255 values, say 10v. the 10v would be divided into 255 and give 0.0392v for each value. so if im right 00000011 (3) would be a voltage of 3 x 0.0392v = 0.1176v?
does the resolution dictate the impedance range. the arduino has 10 bit ADC with 1023 values and the DDS module has 2vpk-pk. i don't know if i have to use 2vpk-pk or 1vpk when finding the resolution.
i did this:
10 bit ADC = 1024 values
2vpk-pk / 1024 = 1.9mv
1.9mv per value
does it have something to do with the reactive components and formulas:
1/2piFC and 2piFL
i don't know enough about this to know what to search for.
any help would be great, a point at some reading material would do it!
thanks
simon
Christmas soon!!! WOOOOOOOOOOOOOOOOOOOO
this year i intend to catch santa in the process, i got a tranq-gun and electrified net!
last year i made a mistake and zapped my brother with a 50,000 volt cattle prod, thought he was santa. and the year before that i shot a bazooka at the neighbours cat (it was throwing a shadow on the wall, i thought it was a reindeer!)