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There is one video showing basic ph probe op amp circuit. The power supply would need to be stable and low noise.
The circuit will be very sensitive. The ph buffering solutions allows the probe to be calibrated.
That could be a ph probe amplifier. Some of the projects take analog signal to...
The circuit was developed to show on an oscilloscope when there is an increase in EM energy from an unconventional method. By an increase in EM energy I mean it is capable of performing beneficial work. I call this simple circuit "The Current Depleted Wave". Even a small change in the depleted...
used a fine paint pen and this drawing for a quick top side copper etch.
The S9018 transistor is high gain so the bias is not as typical as for example a 2N3904.
The emitter has an inductor.
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