How to make a Direct Voltage Adapter ( DVA) to test CDI ignition

In this video I make up a Direct Voltage (Peak Voltage) Adapter for testing CDI ignition systems. This is a simple circuit that is quick to put together and can save quite a bit of money over making a commercial one. For a video on using this adapter see: A Direct Voltage Adapter is used to measure the peak voltage coming out of a primary coil and a pulse or trigger coil. This is an important step when diagnosing a problem with an outboard as it can often he hard to tell the quality of the spark you are getting, or where the problem lies if you aren t getting any spark at all. I will be doing a complete follow up video on using this device soon. The capacitor is a 22uF 400V, R1 is 300 ohms and R2 is 1M ohm. UPDATE For testing ignition coils R1 needs to be by passed. Here is the forum thread I used to source the design: