Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
You're going to have to use two transistors. What supply voltages do you have available?is there a different method that can give a gain? because at the level of the ttl signal the led was not bright enough
thanks
You're going to have to use two transistors. What supply voltages do you have available?
is there a different method that can give a gain? because at the level of the ttl signal the led was not bright enough since the typical forward voltage of the led is 3.8V and the ttl is only 3V
thanks
He says the TTL signal is 3V, and the LED fwd voltage is 3.8V. An emitter follower won't work.your problem here is the source current available from the TTL output. the transistor should provide the required current gain.
This should work, but it won't handle a 100ns pulse.