Logic testers are simple but very helpful devices in testing digital circuits. A logic probe can be designed in many different ways. In this particular design, a combination of discrete and TTL logic ...

The circuit was designed to create a handy logic probe that can show off the logic states for high, low and pulsing outputs with the use of CMOS 4001 integrated circuit. Logic Probe – a handheld probe ...

Workshop space is precious, especially in smaller setups. The compact “Multitester” design combines a logic probe, clock pulse detector, and voltage detector into one audio-feedback device, ...