Help with dual timer circuit

Thread Starter

pato5000

Joined Jan 9, 2010
2
Hi there!
My question would seem a bit novice, but that's what I am...
I've built a time delay circuit with a dual timer 556. The original schematics uses two 555, but I've changed to a dual 556.
My problem is that I need to get the same voltage as the input (9v), but I only get around 2.5v.
How can I manage to get the 9v at the output? I need to keep the board as small as possible, so the less components used would be better.

Thanks!

Here's the schematics:
 

Thread Starter

pato5000

Joined Jan 9, 2010
2
Thanks Bill, I'm going to rebuild the schematics just as yours. By the way, what would be the values for the diode and the transistor? I assume a 1n4001-4007 diode and any NPN transistor, as the 2n2222 would do the job. Am I right?

EDITED: Bill, thanks again! it works perfectly. I used a 2N2222 transistor and a 1N4007 diode (that's what I had at the reach of my hand).The only thing I had to take out R5 (1K) to give more power to the output. Cheers!
 
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