A simple handheld logic probe uses a rail-to-rail op amp and a bicolor LED (a). A modified probe circuit works with 3 V CMOS logic (b)
| Authors | Mark Shill |
| Main Document | Article «Simple logic probe uses bicolor LED» |
| Description | Figure 1 |
| File Format / Size | PDF / 15 Kb |
| Document Language | English |
Other Materials from the Main Document
- Article «Simple logic probe uses bicolor LED»
- Figure 1. A simple handheld logic probe uses a rail-to-rail op amp and a bicolor LED (a). A modified probe circuit works with 3 V CMOS logic (b)
- Figure 2. The output of IC1B, VB, limits at either the positive or negative supply rail depending on the probe voltage
