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Just use a RF trans-meter which transmit a particular digital string and receiver will receive that string. they will work only for eche other. and when trans meter reaches out of range then you can detect it.
search HT12E and HT12D. parallel to serial encoder and decoder ICs. send 12 bit string...
If I want to vanish the capacitance without shorting the plates.
what should I do?
actually in my design I have two parallel plates for different purpose. but they are acting as a capacitor i.e. i am facing a huge coupling. I want that they should not act as capacitor. what is the solution?
1. what will happen if I insert conductive plate between two plates of a capacitor ?
2. what will happen if I insert a plate which is connected to ground between two plates of capacitor?
3. what will happen if I insert a plate which is connected to supply voltage between two plates of capacitor?
consider this simple circuitry. The distance between capacitor plates is varying. and I want to measure the varying current in the input side of op amp. Because of my circuit is providing very low current by this circuit I am converting it to volts. and after this I am getting this voltage o/p...
I am applying 2 volt dc from battery.
1.5 volt and 6 khz AC.
by applying AC the see sow shape moves in up and down direction by which "d" gets changed. now I want to measure this change in C due to D. initial capacitance is near 300 fF (after measuring by precision LCR meter). I think by...
hi,
I am giving ac signal from cro to the device by internal structure of device its capacitance gets change and i want to measure it (which is ultra low i.e. fF range) by measuring current. I am using trans impedance amplifier for measuring. but I am not getting appropriate result.
first of...
Can anybody suggest me a low supply voltage demodulator or voltage multiplier IC.
I can give maximum 3.5 volts.
Is there any IC available in market that can operate below 3.5 volts.
I didn't find any on google, so please help me.
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I am just testing a program and I got these values
256, -384, 1116
732, -494, -654
-2582, 838, 302
2794, -664, -3150
I didn't understand these values.
in datasheet of adxl345 I read that at 16g it has 13 bit resolution. so what would be the maximum output?
also Accelerometer measures...
I am new to use Accelerometer. I read datasheet of adxl345. but I didn't get what is its scale range.
I mean if I will use 16G then what what will be the maximum output. and how to calculate it?
(if the sensitivity is 35 lsb/g at 10-bit resolution).
sir, which configuration I should use if my ip is order of micro amp. range and I want to see the voltage change. that's why I am using high resistance with no series ip resistance.
is there any better solution to examine such low value ip? if yes plz tell me.
thanks.
frequency is 7 khz. and generator probe is 2 mm apart in air from amplifier ip pin( means basically no connection). I am using op amp. with 10 M in feedback to inverting pin and non inverting is connected to ground.
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then how to prevent it. I can fabricate a pcb. So in pcb...
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