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Originally Posted by Esteban
Sorry, forgot erase pin 9 to -
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My comments on your modifications:
1. Replacing the 2M2 + 100K resistor on the timing circuit with a single 2M2.
This is claimed to increase the sensitivity. However, according to the article, the greatest sensitivity is achieved with the lowest pulse rate. In the original circuit there are two ranges (selected by S1) for either a range of approximately 10Hz-100Hz or 100Hz-1kHz.
10Hz is supposed to be the most sensitive.
2. The 10k pot connected to ES3 determines both the voltage potential and polarity of the antenna plate. In this way the plate is charged either positively or negatively to attract negative or positive ions accordingly.
I thought this was already on the outside panel.
3. Three telescopic antennas?
I'm not sure what this is supposed to achieve. Is this supposed to guide ions onto the antenna, or something?
4. Works bad with 5V regulators.
There should be no difference in using regulators with this design, except perhaps some increased stability. Perhaps we should investigate this further.