Yup, R1 is actually connected du Q1's base. Thanks for noticing, skimask.

My drawing only is incorrect, in fact, I built this circuit according to Melanie's plan in a previous post.

The values of the components are those stated in the same previous post.
Quote Originally Posted by Melanie
Q1 BC327B (most any PNP transistor)
Q2 BC547B (most any NPN transistor)
D1, D2 1N4148 (or equivallent low-power signal Diode)
R1 22K
R2, R3, and R4 12K
There is no delay in the program. In fact, I set RA1 high at the very beginning of the code.

At startup, the circuit draws 4,5 mA. A few milliseconds later, the current peaks up to 600mA (I drive an IR led - it's a remote control).

I'm going to add another Tr to provide the "power" to the IR-led instead of using only Q1. This should solve the problem.