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 crystal-controlled oscillator can generate signals as high as 200 MHz. The L1 coil is made up...
This circuit causes the relay to be energized when the input voltage exceeds the voltage value of...
In the figure we have an application of an oscillator 4013 as voltage multiplier. It consists of a...