This circuit for car engine spot adjustment was found in an 80's Radio Electronics. The circuit makes use of a xenon lamp and the pulse transformer must have a turn ratio of 1:50.
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...