File:Water temp difference preamp NoRelay.png
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Size of this preview: 800 × 503 pixels. Other resolutions: 320 × 201 pixels | 1,436 × 902 pixels.
Original file (1,436 × 902 pixels, file size: 175 KB, MIME type: image/png)
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 11:39, 31 May 2025 | | 1,436 × 902 (175 KB) | Definitionofis (talk | contribs) | TL081 output needed a higher blocking resistor, 1K, to reduce current draw. |
| 08:41, 31 May 2025 |  | 1,432 × 892 (175 KB) | Definitionofis (talk | contribs) | Move capacitor to solve the TL081 noisy output. | |
| 17:06, 27 May 2025 |  | 1,438 × 898 (183 KB) | Definitionofis (talk | contribs) | live tested some new part values | |
| 22:59, 26 May 2025 |  | 1,438 × 894 (181 KB) | Definitionofis (talk | contribs) | one capacitor wire was wrong | |
| 22:53, 26 May 2025 |  | 1,430 × 894 (181 KB) | Definitionofis (talk | contribs) | I added capacitors to cancel 60 Hz hum picked up from the long sensor wire inputs. | |
| 10:42, 26 May 2025 |  | 1,440 × 899 (187 KB) | Definitionofis (talk | contribs) | ||
| 10:27, 26 May 2025 |  | 1,436 × 895 (195 KB) | Definitionofis (talk | contribs) |
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