This is the basic full-scale circuit of an LM3914 for voltage measurement or voltage triggering and control. The power supply must be within the indicated range.
This circuit can be applied to several logics. The circuit is from an Electronics Now from the...
This circuit was found in a Popular Electronics of the 1990s. The sensor is a rotating mechanical...
The transistor in this circuit can be the BC558 and the capacitors must be ceramic. Crystals from...