This circuit uses a 7-segment display to indicate the logic level of a test circuit. The power supply is made with 5 V that can come from the analyzed circuit itself.
This circuit consists of a stereo audio compressor. We found it in Radio Electronics magazine from...
This circuit causes an LED to flash at a frequency determined by the capacitor. The circuit has an...
This 2003 circuit uses two types of sensors: by reed-switch and by infrared. If the magnetic...