Tone Probe For Testing Digital ICs The tone probe uses sound to tell the status of the signal being probed. The probe's input circuit senses the condition of the signal and produces either a low-pitched tone for low-level signals ( ... read more>>
Stabilized Low-Input Capacitance Buffer Q1 and Q2 constitute a simple, high-speed FET input buffer. Q1 functions as a source follower, with the Q2 current source load setting the drain-source channel current. The LT1010 buffer provides outp ... read more>>
RF Probe Transistor Q1-configured as a source-follower buffer stage, offering a bit under unity voltage gain--gives the unit a high-impedance input of about 1 M ohm shunted by about 10 pF, which keeps only min ... read more>>
Microvolt Probe The current tracer helps locate a defective IC that is loading down the power supply. The tracer amplifies the small voltage drop caused by current flow along a fraction of an inch of PC wiring and dr ... read more>>
Digital Logic Probe The probe relies on the power supply of the CUT (circuit-under-test). The input to the probe, at probe tip, is fed along two paths. One path flows to the clock inputs of U2a and U2b. The other feeds b ... read more>>
