This circuit was found in an American publication in 1966. The circuit uses a general-purpose FET that admits an equivalent. The instrument is a 250 uA full-scale microammeter.
This sensitive circuit produces na outpu signal when a body is detected by the sensor. The circuit...
This circuit uses a pickup coil to take the signal from a telephone line without contacts. The circuit...
This anti-ringing circuit was found in an English documentation from 1996. The integrated circuit is...