Found in a 1964 Electronic Design, this circuit makes use of FETs of the time. These transistors can be replaced by modern general-purpose types. The input resistance is 30 M.
This circuit was found in an English magazine from 1979. The magazine no longer exists, but the...
This tone-modulated transmitter produces a tone with frequency depending on C4 and C5. Free...
April 2017 - Texas Instruments' new LDC2112 and LDC2114 inductive sensors can now be obtained from...