Found in an ancient American documentation, this circuit can generate signals up to 40 MHz for a Z80, microcontroller widely used at the time. The circuit must be powered with 5 V and also serves as a shield.
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...