Test

If you don't plan to use the "sense" function, put a tin blob on the solder side at J1 and J2 (see the schematics also).

• Use a regulated power supply and set the current limit to 100 mA or something low.
• Connected a voltmeter at the output.
• Turn up the voltage slowly and observe the output. When the LED H1 starts to shine you should have a stable output voltage.

If you have the preregulator LM317/337 installed the output voltage should be stable with 4-5 volts more in than set output voltage.