How did you deal with possible reverse polarity connection to the led? (retorical question, you didn't deal with it per your drawing) Most standard leds have a maximum reverse voltage rating of only 5vdc. An internal series diode in series with the test leads output would probably be enough.Lefty
since the current is limited to approximately 20 mA, who cares if the LED reverse conducts? Won't hurt it.
Please enter a valid email to subscribe
We need to confirm your email address.
To complete the subscription, please click the link in the
email we just sent you.
Thank you for subscribing!
via Egeo 16