This simple logic probe circuit was found in the August 1980 issue of Radio Electronics magazine. The circuit works with both TTL and CMOS logic.
With this circuit it is possible to divide the frequency of a rectangular signal by values between 2...
This circuit, which we find in a documentation from the 70s, filters out the Ru [occurring in...
This circuit simulates the call tone of a telephone. The transducer is a high impedance capsule, and...