Suggested for use in cars and motorcycles, this circuit was found in a 90s Popular Electronics. The MOSFET can be anyone that supports the current of the lamps. Adaptations can be made to use LEDs.
This 1980s circuit uses components of the era that can be replaced by modern equivalents. For the FET we can...
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This is a traditional version of electroscope with FET. We found it at Popular Electronics. The...