This 2005 Linear Technology circuit has separate outputs for monitoring the charge and discharge of a battery. Formulas next to the diagram let you calculate the components.
This preamplifier is intended for the use with magnetic pick-ups. Power supply must have voltages...
This is a VU-meter bargraph with up to 7 LEDs according the Power supply voltage. Adjusts are made by...
This circuit was found the Optoelectronics Sourcebook by Texas Instruments. Any phototransistor...