High Voltage Radiant Charger - Small Battery Charging a Big Battery
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Published 2012-03-22
This is the 3rd video in the series I have. I wanted to show what the finished design will look like. It has a cooling fan to keep the spark module cool. It has 2 1000v ultra fast recovery diodes on the output, these were later upgraded to 10 diodes in parallel, see my video on proper use of diodes for more information. The circuit diagram is now updated to show 10 diodes. This charger can be run connected or disconnected, without fear of circuit failure, or overheating. You can power it with 10.50 to 15 volts DC input power.
In this video I accidently hit AC instead of DC on my volt meter, so the battery voltage was really sitting at 36 volts, not 20 volts. However, the spikes were 110 volts. The higher the voltage spikes that you see as you are radiantly charging the battery, the less charged your battery is. As the battery charges, the spikes may go down to 50 volts and then 20 volt spikes, and eventually you will not see any spikes as the battery will be fully charged and the oscilloscope will show a flat line. You can purchase this Uni-T scope for about $150 on eBay. I would suggest purchasing one, they will last forever and have many uses.
Thanks very much for looking!
Circuit diagrams, eBooks and parts available here: www.ritalie.com/store
Updated: 02/17/2017