The purpose of this 1965 Radio Electronics circuit is to help observe cycloid waveforms on an oscilloscope. The circuit uses only passive components.
We found this adapter in a 1970s American documentation on instrumentation. It is suitable for analog...
Using a general-purpose transistor this AC amplifier was found in the November 1993 issue of...
This hearing aid or stethoscope headset amplifier was found in a 1980s documentation. The...