Found in the 1990 special issue of Radio Electronics Experimenter magazine, this circuit uses an automobile ignition coil. Adjustments can be made to suit the coil.
We find this circuit in a radio amateur publication of 1977. Its purpose is to measure the...
In the figure we have a battery charging circuit for currents up to about 5 A. In series with the...
This circuit is indicated for supplying the CB17495E transmitter. The BD135 must have a small heat...