This circuit makes use of a 741 single source operational amplifier to measure resistors on a linear scale. The circuit may use as an indicator a common multimeter on a low current range.
In the figure we have the power supply for the 8 W amplifier in the previous circuit. The circuit...
This neon lamp level indicator circuit uses low voltage power supply. The circuit was found in a...
The integrated circuit used in this 80's mixer is the LM301A. However the circuit can be used to...