Found in 90's Electronic Engineering this circuit can be used to measure phase angles between two signals from 0 to 180 degrees. The components used admit modern equivalents.
The supplied circuit allows direct control of a small DC motor up to 250 mA. The basic component used...
This frequency band below 15 kHz converter was found in a Popular Electronics from the 90's. The...
If you have a common analog multimeter, you can increase its input resistance in the measurement of...