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.
This oscillator provides a sinusoidal signal and can be applied to other operational amplifiers. The...
The frequency of the sound produced in the speaker depends on the light that falls on the...
The circuit presented was taken from an old English publication in 1981 but it can be easily...