This modified Wien-Bridge oscillator has three output states - high, low, and oscillation - that depend on the input voltage. It drives a bi-color LED to provide a visual indication of the input's relationship to upper and lower thresholds
| Authors | David Dowe |
| Main Document | Article «Visual Voltage Tester Uses Single Op Amp» |
| Description | Figure 1 |
| File Format / Size | PDF / 26 Kb |
| Document Language | English |
