All Questions
6
questions
0
votes
3
answers
445
views
I am having trouble measuring the amplitude of a 97 MHz signal with an oscilloscope with a bandwidth of 100 MHz
First, I designed a Colpitts oscillator with a frequency of around 94-97 MHz. I added a common emitter amplifier to the design to increase the output amplitude of the oscillator, then I connected the ...
- 105
0
votes
2
answers
435
views
Common emitter bandwidth and probing
I am trying to design a simple RF amplifier for a 1MHz AM signal (for low-power transmission). My modulator (JFET-based) outputs ~...
- 281
24
votes
2
answers
12k
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Review request: DIY DC to 50MHz differential oscilloscope probe
Given the cost of proper differential probes, i've decided to make my own. The requirements are:
DC to 50 MHz 3db bandwidth
A few selectable input voltage ranges, from 3V pk-pk to 300 V pk-pk
...
- 8,661
0
votes
1
answer
135
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how to setup a ph sensor probe
I have a INA126 IN-Amp. I hope to use it with a ph probe. But I am not sure exactly how to do that. should I put the probe in series with a branch of a resistive wheat stone bridge, or just tie it to ...
- 387
1
vote
1
answer
148
views
Understanding the capacitors in an op amp circuit
I am a computer programmer forced to make some circuits for a Langmuir probe our lab is making (the main task is programming the analytic software on the computer, but I have to make a basic amplifier ...
1
vote
2
answers
812
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How does a capacitive receiver work for a fox and hound set?
I have been scouring the internet trying to find this answer, I've found hints and ideas, but nothing concrete, like an actual theory of operation.
I'm making a fox and hound wire tracer for my final ...
- 444