This circuit is suitable for the calibration of old analog oscilloscopes. It was found in documentation from the 1970s and could be useful if someone is recovering an oscilloscope of the time.
This 4-digit counter uses CMOS integrated circuits and is powered by voltages from 6 to 12 V. The...
This circuit can use almost any operating system and has a high input impedance. The power supply...
This circuit was obtained from a 90s Radio Electronics. The components used are from that time. The...