This circuit was found in a 1966 General Electric documentation. It makes use of direct contact water sensors and therefore requires an isolation or low voltage relay drive transformer.
This circuit is from American documentation from the 90s. The transistor is general-purpose and...
In the MEMs line of the ST available on Mouser Electronics we highlight the MP23AB01DH audio...
This circuit produces horizontal lines or bars in a analog TV tuned between channels 2 and 5. L1...