This circuit was found in an Electronics World of 1968, making use of components of the time, not common today. The power supply is not provided.
This 1980s circuit uses components of the era that can be replaced by modern equivalents. For the FET we can...
Delivering Over 4X More Battery Life and Faster Time to Market, Platform Comes Complete with...
This is a traditional version of electroscope with FET. We found it at Popular Electronics. The...