This small signal amplifier circuit was found in Motorola's 1969 documentation. The FET and the transistor can be of any type and is battery powered since the consumption is very low.
We found this circuit in a 1992 Popular Electronics. The circuit has an optical sensor with LED...
The circuit shown in the figure has an output voltage rise time of 0.22 ms and an input time...
This interesting circuit causes a set of LEDs to flash at a speed controlled by the CI1 in an...