8370Views3Replies

Author Options:

Is it possible to make a LED blinking circuit with a single transistor? Answered

Tags:alarm

3 Replies

user
qs (author)2009-03-09

It's simpler than you think - one transistor and one "AA" battery. Check it out here.

qs

Select as Best AnswerUndo Best Answer

user
Rmcfarland (author)2009-02-04

Actually, it is possible. See this website. I have built this circuit and can verify that it does work, but I had much better success using 2N2222 transistors. Also, you need around 12 volts for it to work properly. Hope this helps!

Select as Best AnswerUndo Best Answer

user
UziMonkey (author)2009-02-03

You'll need a little more than a transistor. You need some kind of timer (usually controlled by a capacitor and resistor) and a flip-flop or similar. This circuit is about as simple as you can get, and is controlled by the charging and discharging of the capacitor. Though a 555 IC is easier to use and is dirt cheap.

Select as Best AnswerUndo Best Answer