The circuit shown was found in the 1994 National Semiconductor's Linear Application Handbook. The op amp admits equivalents and the power supply must be symmetrical.
This high voltage circuit was found in a 2005 Linear Technology application manual. The circuit...
With this circuit we can activate a relay with a simple touch on the sensor. The relay can be 6 or...
What sets this transmitter apart, which we found in a 1990 documentation, is the modulation by the...